diff --git a/mindspore/ccsrc/frontend/operator/composite/composite.cc b/mindspore/ccsrc/frontend/operator/composite/composite.cc
index fbcb06629db77abd2dcaa607ddecf7da50193a6c..262cb789cc5f926e844254f49894f9e33c7aff51 100644
--- a/mindspore/ccsrc/frontend/operator/composite/composite.cc
+++ b/mindspore/ccsrc/frontend/operator/composite/composite.cc
@@ -333,28 +333,28 @@ ArgsPairList HyperMap::Harmonize(const FuncGraphPtr &func_graph, const ArgsPairL
 }
 
 FuncGraphPtr HyperMap::GenerateFromTypes(const TypePtrList &args_spec_list) {
-  FuncGraphPtr ptrGraph = std::make_shared<FuncGraph>();
-  ptrGraph->set_flag(FUNC_GRAPH_FLAG_CORE, true);
-  ptrGraph->set_flag(FUNC_GRAPH_FLAG_SPECIALIZE_PARAMETER, true);
-  ptrGraph->debug_info()->set_name("hyper_map");
+  FuncGraphPtr ptr_graph = std::make_shared<FuncGraph>();
+  ptr_graph->set_flag(FUNC_GRAPH_FLAG_CORE, true);
+  ptr_graph->set_flag(FUNC_GRAPH_FLAG_SPECIALIZE_PARAMETER, true);
+  ptr_graph->debug_info()->set_name("hyper_map");
 
   AnfNodePtr ptrFnArg = nullptr;
   std::size_t i = 0;
   ArgsPairList argmap;
   ArgsPairList argmap2;
   if (fn_leaf_ == nullptr) {
-    ptrFnArg = ptrGraph->add_parameter();
+    ptrFnArg = ptr_graph->add_parameter();
     i = 1;
   }
 
   std::size_t size = args_spec_list.size();
   for (; i < size; ++i) {
-    argmap.push_back(std::make_pair(ptrGraph->add_parameter(), args_spec_list[i]));
+    argmap.push_back(std::make_pair(ptr_graph->add_parameter(), args_spec_list[i]));
   }
 
-  argmap2 = Harmonize(ptrGraph, argmap);
-  ptrGraph->set_output(Make(ptrGraph, ptrFnArg, argmap2));
-  return ptrGraph;
+  argmap2 = Harmonize(ptr_graph, argmap);
+  ptr_graph->set_output(Make(ptr_graph, ptrFnArg, argmap2));
+  return ptr_graph;
 }
 
 abstract::AbstractBasePtrList HyperMap::NormalizeArgs(const AbstractBasePtrList &args_spec_list) const {
@@ -582,30 +582,30 @@ FuncGraphPtr GradOperation::GetGrad(AnfNodePtr node, const AnfNodePtr &weights,
   inputs.push_back(opsTupleItem);
   inputs.push_back(cnode);
   inputs.push_back(NewValueNode(1));
-  AnfNodePtr ptrBprop = ret->NewCNode(inputs);
+  AnfNodePtr ptr_bprop = ret->NewCNode(inputs);
 
-  doGetGrad(ret, out, ptrBprop, weights_node, opsTupleItem);
+  doGetGrad(ret, out, ptr_bprop, weights_node, opsTupleItem);
   return ret;
 }
 
-void GradOperation::doGetGrad(const FuncGraphPtr &func_graph, AnfNodePtr out, AnfNodePtr ptrBprop, AnfNodePtr weights,
+void GradOperation::doGetGrad(const FuncGraphPtr &func_graph, AnfNodePtr out, AnfNodePtr ptr_bprop, AnfNodePtr weights,
                               ValueNodePtr opsTupleItem) {
   MS_EXCEPTION_IF_NULL(func_graph);
 
-  AnfNodePtr ptrBPropArg = nullptr;
+  AnfNodePtr ptr_bprop_arg = nullptr;
   if (sens_param_) {
-    ptrBPropArg = func_graph->add_parameter();
+    ptr_bprop_arg = func_graph->add_parameter();
   } else {
     auto ones_like = prim::GetPythonOps("ones_like");
-    ptrBPropArg = func_graph->NewCNode({NewValueNode(ones_like), out});
+    ptr_bprop_arg = func_graph->NewCNode({NewValueNode(ones_like), out});
   }
 
-  AnfNodePtr ptrBApp = func_graph->NewCNode({ptrBprop, ptrBPropArg});
+  AnfNodePtr ptr_bapp = func_graph->NewCNode({ptr_bprop, ptr_bprop_arg});
 
   CNodePtr fv_bprop = nullptr;
   if (get_by_list_) {
     // python code: grads = hyper_map(F.partial(env_get, env), weights)
-    AnfNodePtr env = func_graph->NewCNode({NewValueNode(prim::kPrimTupleGetItem), ptrBApp, NewValueNode(0)});
+    AnfNodePtr env = func_graph->NewCNode({NewValueNode(prim::kPrimTupleGetItem), ptr_bapp, NewValueNode(0)});
     AnfNodePtr partial_env_get =
       func_graph->NewCNode({NewValueNode(prim::kPrimPartial), NewValueNode(prim::GetPythonOps("env_get")), env});
     MetaFuncGraphPtr hyper_map = std::make_shared<HyperMap>();
@@ -614,7 +614,7 @@ void GradOperation::doGetGrad(const FuncGraphPtr &func_graph, AnfNodePtr out, An
 
   CNodePtr inputs_bprop = nullptr;
   if (get_all_) {
-    inputs_bprop = func_graph->NewCNode({NewValueNode(kTail), ptrBApp});
+    inputs_bprop = func_graph->NewCNode({NewValueNode(kTail), ptr_bapp});
   }
 
   // Gradients wrt inputs and parameters
@@ -636,8 +636,8 @@ void GradOperation::doGetGrad(const FuncGraphPtr &func_graph, AnfNodePtr out, An
   }
 
   // Gradients wrt first input.
-  // ptrBApp returns (EnvInstance(grads wrt params), grads wrt input0, grads wrt input1, ...), so 1 is for first input
-  func_graph->set_output(func_graph->NewCNode({opsTupleItem, ptrBApp, NewValueNode(1)}));
+  // ptr_bapp returns (EnvInstance(grads wrt params), grads wrt input0, grads wrt input1, ...), so 1 is for first input
+  func_graph->set_output(func_graph->NewCNode({opsTupleItem, ptr_bapp, NewValueNode(1)}));
 }
 
 // Generate the graph.
@@ -657,35 +657,35 @@ FuncGraphPtr GradOperation::GenerateFuncGraph(const AbstractBasePtrList &args_sp
   auto real_fn = dyn_cast<FuncGraphAbstractClosure>(fn);
   MS_EXCEPTION_IF_NULL(real_fn);
 
-  FuncGraphPtr ptrGraph = real_fn->func_graph();
-  MS_EXCEPTION_IF_NULL(ptrGraph);
-  TraceManager::DebugTrace(std::make_shared<TraceGradOperation>(ptrGraph->debug_info()));
-  FuncGraphPtr dfBuilder = std::make_shared<FuncGraph>();
+  FuncGraphPtr ptr_graph = real_fn->func_graph();
+  MS_EXCEPTION_IF_NULL(ptr_graph);
+  TraceManager::DebugTrace(std::make_shared<TraceGradOperation>(ptr_graph->debug_info()));
+  FuncGraphPtr df_builder = std::make_shared<FuncGraph>();
   TraceManager::EndTrace();
-  auto nparam = ptrGraph->parameters().size();
+  auto nparam = ptr_graph->parameters().size();
 
   std::ostringstream ss;
   ss << "grad{" << nparam << "}";
-  dfBuilder->set_flag(FUNC_GRAPH_FLAG_CORE, true);
-  dfBuilder->debug_info()->set_name(ss.str());
-  ParameterPtr param_graph = dfBuilder->add_parameter();
+  df_builder->set_flag(FUNC_GRAPH_FLAG_CORE, true);
+  df_builder->debug_info()->set_name(ss.str());
+  ParameterPtr param_graph = df_builder->add_parameter();
 
   AnfNodePtr weights = nullptr;
   if (get_by_list_) {
-    weights = dfBuilder->add_parameter();
+    weights = df_builder->add_parameter();
   }
 
   std::vector<AnfNodePtr> inputs;
   inputs.push_back(NewValueNode(prim::kPrimJ));
   inputs.push_back(param_graph);
-  auto jf = dfBuilder->NewCNode(inputs);
+  auto jf = df_builder->NewCNode(inputs);
   // df is checked in GetGrad
-  TraceManager::DebugTrace(std::make_shared<TraceGradOperation>(ptrGraph->debug_info()));
-  auto df = GetGrad(jf, weights, ptrGraph->parameters());
+  TraceManager::DebugTrace(std::make_shared<TraceGradOperation>(ptr_graph->debug_info()));
+  auto df = GetGrad(jf, weights, ptr_graph->parameters());
   TraceManager::EndTrace();
-  dfBuilder->set_output(NewValueNode(df));
+  df_builder->set_output(NewValueNode(df));
 
-  return dfBuilder;
+  return df_builder;
 }
 
 REGISTER_PYBIND_DEFINE(GradOperation_, ([](const py::module *m) {
diff --git a/mindspore/ccsrc/frontend/operator/composite/do_signature.cc b/mindspore/ccsrc/frontend/operator/composite/do_signature.cc
index 50be3c5b29a2914738abeae1d4a327a504511cf9..248e42cb5b8aecf7aed546ee4cf6b646e2e27cf9 100644
--- a/mindspore/ccsrc/frontend/operator/composite/do_signature.cc
+++ b/mindspore/ccsrc/frontend/operator/composite/do_signature.cc
@@ -72,10 +72,15 @@ void SetMaxType(TypeId *max_type_id, size_t *max_type_number, const TypeId type_
 bool GetTensorOrScalarTypeInfo(AbstractBasePtr arg_value, bool is_write, TypeId *arg_type_id,
                                TypeId *arg_type = nullptr) {
   if (arg_value->isa<abstract::AbstractRef>()) {
-    if (is_write) {
-      arg_value = arg_value->cast<abstract::AbstractRefPtr>()->ref_origin();
-    } else {
-      arg_value = arg_value->cast<abstract::AbstractRefPtr>()->ref();
+    auto ref = arg_value->cast<abstract::AbstractRefPtr>();
+    arg_value = ref->ref();
+    if (!is_write && ref->need_cast()) {
+      auto tensor_type = ref->target_type();
+      *arg_type_id = tensor_type->type_id();
+      if (arg_type != nullptr) {
+        *arg_type = kObjectTypeTensorType;
+      }
+      return true;
     }
   }
   if (arg_value->isa<abstract::AbstractTensor>()) {
@@ -248,6 +253,8 @@ void DoAutoCast(const std::string &func_name, const std::vector<Signature> &sign
     if (arg_value->isa<abstract::AbstractTensor>() && arg_type_id == it->second) {
       continue;
     }
+    MS_LOG(DEBUG) << "do cast for inputs " << i << " " << (*op_inputs)[i + 1]->ToString() << " " << arg_type_id
+                  << " to " << it->second;
     (*op_inputs)[i + 1] = DoCast((*op_inputs)[i + 1], it->second, graph);
   }
 }
@@ -289,16 +296,23 @@ AnfNodePtr BuildNewCNode(const FuncGraphPtr &func_graph, const std::string &func
 
     TypePtr type = args_spec_list[i]->GetTypeTrack();
     if (type && type->type_id() == kObjectTypeRef) {
+      auto ref_abs = args_spec_list[i]->cast<abstract::AbstractRefPtr>();
       if (sig == SignatureEnumRW::kRWRead) {
-        param = func_graph->NewCNode({NewValueNode(prim::kPrimGetRefValue), param});
+        param = NewCNode({NewValueNode(prim::kPrimGetRefValue), param}, func_graph);
+        if (ref_abs && ref_abs->need_cast()) {
+          auto cast = prim::GetPythonOps("cast", "mindspore.ops.functional");
+          param = NewCNode({NewValueNode(cast), param, NewValueNode(ref_abs->target_type())}, func_graph);
+        }
       } else if (sig == SignatureEnumRW::kRWWrite) {
-        param = func_graph->NewCNode({NewValueNode(prim::kPrimGetRefOrigin), param});
+        param = NewCNode({NewValueNode(prim::kPrimGetRefValue), param}, func_graph);
         write_indices.insert(i);
       }
       // If sig is SignatureEnumRW::kRWRef, not do anything.
     } else if (sig == SignatureEnumRW::kRWWrite && type->type_id() != kObjectTypeRefKey) {
       MS_EXCEPTION(TypeError) << "Function " << func_name << "'s input " << i << " should be a Parameter.";
     }
+    MS_LOG(DEBUG) << "Function " << func_name << "'s input " << i << " " << param->DebugString(2) << " type "
+                  << args_spec_list[i]->ToString();
     op_inputs.push_back(param);
   }
   // process default
diff --git a/mindspore/ccsrc/frontend/operator/composite/unpack_call.cc b/mindspore/ccsrc/frontend/operator/composite/unpack_call.cc
index 2c9e0b538f344c136694ddbc2fb107831991cdb8..1b6f358edd5f3c44ae5bb7e2e1e10035bc345a40 100644
--- a/mindspore/ccsrc/frontend/operator/composite/unpack_call.cc
+++ b/mindspore/ccsrc/frontend/operator/composite/unpack_call.cc
@@ -49,13 +49,14 @@ FuncGraphPtr UnpackCall::GenerateFuncGraph(const AbstractBasePtrList &args_spec_
     MS_LOG(EXCEPTION) << op_name << " requires at least two args, but got " << arg_length << ".";
   }
 
-  (void)abstract::CheckArg<AbstractFunction>(op_name, args_spec_list, 0);
+  // No need to check, check will be done in infer.
   auto ret_graph = std::make_shared<FuncGraph>();
   ret_graph->set_flag(FUNC_GRAPH_FLAG_CORE, true);
+  ret_graph->debug_info()->set_name("UnpackCall");
 
-  AnfNodePtr fnNode = ret_graph->add_parameter();
+  AnfNodePtr fn_node = ret_graph->add_parameter();
   std::vector<AnfNodePtr> elems;
-  elems.push_back(fnNode);
+  elems.push_back(fn_node);
   for (size_t index = 1; index < arg_length; index++) {
     MS_EXCEPTION_IF_NULL(args_spec_list[index]);
     if (args_spec_list[index]->isa<AbstractTuple>()) {
diff --git a/mindspore/ccsrc/frontend/operator/prim_others.cc b/mindspore/ccsrc/frontend/operator/prim_others.cc
index 4b2a5be482d1ff10ce4d54c3add507451b51e62d..7707dd5a8fb45de343ab2407013363f4c8803fe5 100644
--- a/mindspore/ccsrc/frontend/operator/prim_others.cc
+++ b/mindspore/ccsrc/frontend/operator/prim_others.cc
@@ -129,16 +129,22 @@ AbstractBasePtr InferImplMakeRefKey(const AnalysisEnginePtr &, const PrimitivePt
 
 AbstractBasePtr InferImplMakeRef(const AnalysisEnginePtr &, const PrimitivePtr &,
                                  const AbstractBasePtrList &args_spec_list) {
-  // arguments: key, value, original value
+  // arguments: key, value, target type(None if no target type)
   if (args_spec_list.size() != 3) {
     MS_LOG(EXCEPTION) << "make_ref evaluator requires 3 parameters, while the input size is " << args_spec_list.size()
                       << ".";
   }
   TypePtr type = args_spec_list[0]->GetTypeTrack();
+  ValuePtr tensor_target_v = args_spec_list[2]->BuildValue();
   if (type->type_id() != kObjectTypeRefKey) {
     MS_LOG(EXCEPTION) << "First input of make_ref should be a RefKey but a " << type->ToString();
   }
-  return std::make_shared<AbstractRef>(args_spec_list[0], args_spec_list[1], args_spec_list[2]);
+  auto need_cast = !tensor_target_v->isa<None>();
+  if (need_cast && !tensor_target_v->isa<Type>()) {
+    MS_LOG(EXCEPTION) << "Third input of make_ref should be a Type but a " << tensor_target_v->ToString();
+  }
+  TypePtr cast_target = tensor_target_v->cast<TypePtr>();
+  return std::make_shared<AbstractRef>(args_spec_list[0], args_spec_list[1], need_cast, cast_target);
 }
 
 AbstractBasePtr InferImplGetRefKey(const AnalysisEnginePtr &, const PrimitivePtr &,
@@ -163,25 +169,11 @@ AbstractBasePtr InferImplGetRefValue(const AnalysisEnginePtr &, const PrimitiveP
   }
   TypePtr type = args_spec_list[0]->GetTypeTrack();
   if (type->type_id() != kObjectTypeRef) {
-    MS_LOG(EXCEPTION) << "First input of get_ref_value should be a Ref but a " << type->ToString();
+    return args_spec_list[0];
   }
   return args_spec_list[0]->cast<AbstractRefPtr>()->ref();
 }
 
-AbstractBasePtr InferImplGetRefOrigin(const AnalysisEnginePtr &, const PrimitivePtr &,
-                                      const AbstractBasePtrList &args_spec_list) {
-  // arguments: value
-  if (args_spec_list.size() != 1) {
-    MS_LOG(EXCEPTION) << "get_ref_origin requires 1 parameters, while the input size is " << args_spec_list.size()
-                      << ".";
-  }
-  TypePtr type = args_spec_list[0]->GetTypeTrack();
-  if (type->type_id() != kObjectTypeRef) {
-    MS_LOG(EXCEPTION) << "First input of get_ref_value should be a Ref but a " << type->ToString();
-  }
-  return args_spec_list[0]->cast<AbstractRefPtr>()->ref_origin();
-}
-
 AbstractBasePtr InferImplStateSetItem(const AnalysisEnginePtr &, const PrimitivePtr &primitive,
                                       const AbstractBasePtrList &args_spec_list) {
   // args: Two objects of a subclass of AbstractBase, key and value.
diff --git a/mindspore/ccsrc/frontend/optimizer/irpass.cc b/mindspore/ccsrc/frontend/optimizer/irpass.cc
index d1d29fcbae1bf41f27ed8b7c13fcc10f64e3905d..b41c3081b48f85d64525c9c568b40eeebf90275b 100644
--- a/mindspore/ccsrc/frontend/optimizer/irpass.cc
+++ b/mindspore/ccsrc/frontend/optimizer/irpass.cc
@@ -95,10 +95,10 @@ OptimizeIRPassLib::OptimizeIRPassLib() {
   // Ref eliminate
   make_ref_eliminate_ =
     MakeSubstitution(std::make_shared<MakeRefEliminater>(), "make_ref_eliminate", prim::kPrimMakeRef);
-  get_ref_param_eliminate_ = MakeSubstitution(std::make_shared<GetRefParamEliminater>(), "get_ref_param_eliminate",
-                                              {prim::kPrimGetRefValue, prim::kPrimGetRefOrigin});
+  get_ref_param_eliminate_ =
+    MakeSubstitution(std::make_shared<GetRefParamEliminater>(), "get_ref_param_eliminate", {prim::kPrimGetRefValue});
   get_make_ref_eliminate_ = MakeSubstitution(std::make_shared<GetMakeRefEliminater>(), "get_make_ref_eliminate",
-                                             {prim::kPrimGetRefKey, prim::kPrimGetRefValue, prim::kPrimGetRefOrigin});
+                                             {prim::kPrimGetRefKey, prim::kPrimGetRefValue});
 
   replace_refkey_by_param_ = MakeSubstitution(std::make_shared<ReplaceRefkeyByParam>(), "replace_refkey_by_param",
                                               IsValueNode<RefKey>, opt::FORCE_RENORM);
diff --git a/mindspore/ccsrc/frontend/optimizer/irpass/ref_eliminate.h b/mindspore/ccsrc/frontend/optimizer/irpass/ref_eliminate.h
index b7759daad415dddad2241627283485822d2aaefd..fc859b213e704208315af66bf9465c81063054c2 100644
--- a/mindspore/ccsrc/frontend/optimizer/irpass/ref_eliminate.h
+++ b/mindspore/ccsrc/frontend/optimizer/irpass/ref_eliminate.h
@@ -37,27 +37,23 @@ class MakeRefEliminater : public OptimizerCaller {
 };
 
 // {prim::kPrimGetRefValue, Parameter} -> Parameter
-// {prim::kPrimGetRefOrigin, Parameter} -> Parameter
 class GetRefParamEliminater : public OptimizerCaller {
  public:
   AnfNodePtr operator()(const OptimizerPtr &, const AnfNodePtr &node) override {
     PatternNode<AnfNodePtr> x;
     MATCH_REPLACE(node, PPrimitive(prim::kPrimGetRefValue, x), x);
-    MATCH_REPLACE(node, PPrimitive(prim::kPrimGetRefOrigin, x), x);
     return nullptr;
   }
 };
 
 // {prim::kPrimGetRefKey, {prim::kPrimMakeRef, X, Y, Z}} -> X
 // {prim::kPrimGetRefValue, {prim::kPrimMakeRef, X, Y, Z}} -> Y
-// {prim::kPrimGetRefOrigin, {prim::kPrimMakeRef, X, Y, Z}} -> Z
 class GetMakeRefEliminater : public OptimizerCaller {
  public:
   AnfNodePtr operator()(const OptimizerPtr &, const AnfNodePtr &node) override {
     PatternNode<AnfNodePtr> x, y, z;
     MATCH_REPLACE(node, PPrimitive(prim::kPrimGetRefKey, PPrimitive(prim::kPrimMakeRef, x, y, z)), x);
     MATCH_REPLACE(node, PPrimitive(prim::kPrimGetRefValue, PPrimitive(prim::kPrimMakeRef, x, y, z)), y);
-    MATCH_REPLACE(node, PPrimitive(prim::kPrimGetRefOrigin, PPrimitive(prim::kPrimMakeRef, x, y, z)), z);
 
     return nullptr;
   }
diff --git a/mindspore/ccsrc/pipeline/jit/parse/parse.cc b/mindspore/ccsrc/pipeline/jit/parse/parse.cc
index cadb0f61996a19be0017e0ef636aaf13ab3a5e39..be75d6ac2e6179e5aa8105ca52ec2ca87c00bb5b 100644
--- a/mindspore/ccsrc/pipeline/jit/parse/parse.cc
+++ b/mindspore/ccsrc/pipeline/jit/parse/parse.cc
@@ -60,6 +60,17 @@ FuncGraphPtr ParsePythonCode(const py::object &obj, const std::string &python_mo
   return func_graph;
 }
 
+ValuePtr GetMixedPrecisionTargetType(const FuncGraphPtr &func_graph, const AnfNodePtr &param) {
+  TypePtr dst_type;
+  if (func_graph->has_flag(GRAPH_FLAG_MIX_PRECISION_FP32)) {
+    return kFloat32;
+  } else if (func_graph->has_flag(GRAPH_FLAG_MIX_PRECISION_FP16)) {
+    return kFloat16;
+  } else {
+    return kNone;
+  }
+}
+
 // if any mixed precision flag add a cast node after the parameter node.
 AnfNodePtr GetMixedPrecisionCastHelp(const FuncGraphPtr &func_graph, const AnfNodePtr &param) {
   TypePtr dst_type;
diff --git a/mindspore/ccsrc/pipeline/jit/parse/parse.h b/mindspore/ccsrc/pipeline/jit/parse/parse.h
index afb72ba5c94e8b183c873e1dd12d8d9939d3a5cf..47366b664eddcd82068b21d80703ae35fb3bc29c 100644
--- a/mindspore/ccsrc/pipeline/jit/parse/parse.h
+++ b/mindspore/ccsrc/pipeline/jit/parse/parse.h
@@ -359,6 +359,7 @@ class ParseAst {
 bool UpdateFuncGraphFlags(py::object obj, const FuncGraphPtr &func_graph);
 
 AnfNodePtr GetMixedPrecisionCastHelp(const FuncGraphPtr &func_graph, const AnfNodePtr &param);
+ValuePtr GetMixedPrecisionTargetType(const FuncGraphPtr &func_graph, const AnfNodePtr &param);
 
 }  // namespace parse
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/pipeline/jit/parse/resolve.cc b/mindspore/ccsrc/pipeline/jit/parse/resolve.cc
index 48f3a24652c2d74d7f7c6bb33063d561bc8be43b..9f0a4b495c9a9e46a51e633ce7d571028f11e0f3 100644
--- a/mindspore/ccsrc/pipeline/jit/parse/resolve.cc
+++ b/mindspore/ccsrc/pipeline/jit/parse/resolve.cc
@@ -70,6 +70,7 @@ bool SymbolResolver::Resolve() {
 }
 
 namespace {
+// if any mixed precision flag add a cast node after the parameter node.
 // argument obj should be python Parameter object
 // it will be converted to Parameter node here
 AnfNodePtr ResolveParameterObj(const FuncGraphPtr &func_graph, const py::object &obj) {
@@ -112,11 +113,12 @@ AnfNodePtr ResolveParameterObj(const FuncGraphPtr &func_graph, const py::object
   }
   auto iter = func_graph->make_ref_params().find(para_node);
   if (iter == func_graph->make_ref_params().end()) {
-    AnfNodePtr value = GetMixedPrecisionCastHelp(func_graph, para_node);
+    ValuePtr target_type = GetMixedPrecisionTargetType(func_graph, para_node);
 
     AnfNodePtr make_ref = NewValueNode(prim::kPrimMakeRef);
     AnfNodePtr ref_key = NewValueNode(std::make_shared<RefKey>(param_name));
-    AnfNodePtr ref_node = func_graph->NewCNode({make_ref, ref_key, value, para_node});
+    AnfNodePtr target_type_node = NewValueNode(target_type);
+    AnfNodePtr ref_node = func_graph->NewCNode({make_ref, ref_key, para_node, target_type_node});
     func_graph->make_ref_params()[para_node] = ref_node;
     func_graph->add_parameter_obj_node(ref_node);
     return ref_node;
diff --git a/mindspore/ccsrc/pipeline/jit/static_analysis/prim.cc b/mindspore/ccsrc/pipeline/jit/static_analysis/prim.cc
index 2dd0ba6b4996c0f4e7ec5e160e390d2ce736a0a6..1cd9ecdb3b36f5aaae73f5cac00e7fcfb7f867ea 100644
--- a/mindspore/ccsrc/pipeline/jit/static_analysis/prim.cc
+++ b/mindspore/ccsrc/pipeline/jit/static_analysis/prim.cc
@@ -125,7 +125,6 @@ PrimitiveEvalImplMap &GetPrimitiveToEvalImplMap() {
     {prim::kPrimMakeRef, {InferImplMakeRef, true}},
     {prim::kPrimGetRefKey, {InferImplGetRefKey, true}},
     {prim::kPrimGetRefValue, {InferImplGetRefValue, true}},
-    {prim::kPrimGetRefOrigin, {InferImplGetRefOrigin, true}},
     {prim::kPrimStateSetItem, {InferImplStateSetItem, true}},
     {prim::kPrimDepend, {InferImplDepend, true}},
     {prim::kPrimBroadcastGradientArgs, {InferImplBroadcastGradientArgs, false}},
diff --git a/mindspore/ccsrc/pipeline/pynative/pynative_execute.cc b/mindspore/ccsrc/pipeline/pynative/pynative_execute.cc
index 703f3dff7ec5045ac3719ae6d81ff7faaf830688..b918de0942445698ef41447dd60a61b6e29e0531 100644
--- a/mindspore/ccsrc/pipeline/pynative/pynative_execute.cc
+++ b/mindspore/ccsrc/pipeline/pynative/pynative_execute.cc
@@ -1117,11 +1117,12 @@ std::vector<AnfNodePtr> PynativeExecutor::GetWeightsArgs(const py::object &weigh
         free_param->debug_info()->set_name(param_name);
         para_node = free_param;
       }
-      AnfNodePtr value = parse::GetMixedPrecisionCastHelp(df_builder_, para_node);
+      ValuePtr target_type = parse::GetMixedPrecisionTargetType(df_builder_, para_node);
       AnfNodePtr make_ref = NewValueNode(prim::kPrimMakeRef);
       auto refkey = std::make_shared<RefKey>(para_node->cast<ParameterPtr>()->name());
       AnfNodePtr ref_key_node = NewValueNode(refkey);
-      AnfNodePtr ref_node = df_builder_->NewCNode({make_ref, ref_key_node, value, para_node});
+      AnfNodePtr target_type_node = NewValueNode(target_type);
+      AnfNodePtr ref_node = df_builder_->NewCNode({make_ref, ref_key_node, para_node, target_type_node});
       w_args.push_back(ref_node);
     }
   } else {
diff --git a/mindspore/core/abstract/abstract_value.cc b/mindspore/core/abstract/abstract_value.cc
index efdf12452b0322202f64d628162ca08ab1116030..dab262bc8970d94329dd18aad8ca83f158891fd6 100644
--- a/mindspore/core/abstract/abstract_value.cc
+++ b/mindspore/core/abstract/abstract_value.cc
@@ -808,14 +808,40 @@ std::string AbstractJTagged::ToString() const {
   return buffer.str();
 }
 
+AbstractRef::AbstractRef(const AbstractBasePtr &ref_key, const AbstractBasePtr &ref_value, bool need_cast,
+                         TypePtr cast_target)
+    : ref_key_(ref_key), ref_(ref_value), need_cast_(false), target_type_(nullptr), ref_key_value_(nullptr) {
+  set_type(std::make_shared<RefType>());
+  auto origin_type = ref_value->BuildType();
+  if (need_cast && cast_target && origin_type && origin_type->isa<TensorType>()) {
+    auto tensor_dtype = origin_type->cast<TensorTypePtr>()->element();
+    if (tensor_dtype && IsSubType(tensor_dtype, kFloat)) {
+      if (cast_target != tensor_dtype) {
+        need_cast_ = true;
+        target_type_ = cast_target;
+      }
+    }
+  }
+  if (ref_key && ref_key->isa<AbstractRefKey>()) {
+    ref_key_value_ = ref_key->cast<AbstractRefKeyPtr>()->ref_key_value();
+  }
+}
+
+BaseShapePtr AbstractRef::BuildShape() const { return ref_->BuildShape(); }
+
 TypePtr AbstractRef::BuildType() const {
   TypePtr subtype = ref_->BuildType();
-  TypePtr subtype_origin = ref_origin_->BuildType();
+  TypePtr subtype_origin = subtype;
+  if (need_cast_) {
+    subtype_origin = std::make_shared<TensorType>(target_type_);
+  }
   return std::make_shared<RefType>(subtype, subtype_origin);
 }
 
 bool AbstractRef::operator==(const AbstractRef &other) const {
-  return (*ref_ == *other.ref_) && (*ref_key_ == *other.ref_key_) && (*ref_origin_ == *other.ref_origin_);
+  return (*ref_ == *other.ref_) && (need_cast_ == other.need_cast_) &&
+         (!need_cast_ || (*target_type_ == *other.target_type_));
+  // not compare the key for reuse the graph (*ref_key_ == *other.ref_key_);
 }
 
 bool AbstractRef::operator==(const AbstractBase &other) const {
@@ -826,27 +852,45 @@ bool AbstractRef::operator==(const AbstractBase &other) const {
   return false;
 }
 
+AbstractBasePtr AbstractRefKey::Join(const AbstractBasePtr &other) {
+  MS_EXCEPTION_IF_NULL(other);
+  if (*this == *other) {
+    auto ret = shared_from_base<AbstractBase>();
+    return ret;
+  }
+  auto value_self = GetValueTrack();
+  MS_EXCEPTION_IF_NULL(value_self);
+  ValuePtr res_value = ValueJoin(value_self, other->GetValueTrack());
+  if (res_value == value_self) {
+    auto ret = shared_from_base<AbstractBase>();
+    return ret;
+  }
+  auto ret = std::make_shared<AbstractRefKey>();
+  ret->set_value(res_value);
+  return ret;
+}
+
 AbstractBasePtr AbstractRef::Join(const AbstractBasePtr &other) {
   auto other_ref = other->cast<AbstractRefPtr>();
   if (other_ref == nullptr) {
     auto new_ref = ref_->Join(other);
-    return std::make_shared<AbstractRef>(ref_key_, new_ref, ref_origin_);
+    return std::make_shared<AbstractRef>(ref_key_, new_ref);
   }
-  if (*this == *other) {
+  if ((*this == *other) && (*ref_key_ == *other_ref->ref_key_)) {
     return shared_from_base<AbstractBase>();
   }
   auto ref_key = ref_key_->Join(other_ref->ref_key_);
   auto ref = ref_->Join(other_ref->ref());
-  auto ref_origin = ref_origin_->Join(other_ref->ref_origin_);
-
-  return std::make_shared<AbstractRef>(ref_key, ref, ref_origin);
+  return std::make_shared<AbstractRef>(ref_key, ref);
 }
 
 std::string AbstractRef::ToString() const {
   std::ostringstream buffer;
   buffer << type_name() << "("
-         << "key: " << ref_key_->ToString() << " ref_value: " << ref_->ToString()
-         << " origin_value: " << ref_origin_->ToString();
+         << "key: " << ref_key_->ToString() << " ref_value: " << ref_->ToString();
+  if (need_cast_) {
+    buffer << " cast to: " << target_type_->ToString();
+  }
   auto value = GetValueTrack();
   if (value) {
     buffer << ", value: " << value->ToString();
@@ -873,6 +917,12 @@ std::string AbstractNone::ToString() const {
 
 ValuePtr AbstractNone::RealBuildValue() const { return kNone; }
 
+AbstractBasePtr AbstractRefKey::Broaden() const {
+  auto refkey = std::make_shared<AbstractRefKey>();
+  refkey->set_value(kAnyValue);
+  return refkey;
+}
+
 bool AbstractRefKey::operator==(const AbstractRefKey &other) const {
   ValuePtr value_self = GetValueTrack();
   ValuePtr value_other = other.GetValueTrack();
diff --git a/mindspore/core/abstract/abstract_value.h b/mindspore/core/abstract/abstract_value.h
index faf80c639b5c615914100ff6887fdda7020594eb..eee0fc670c8a6206d26dcedc5be5bf15ad3dcfca 100644
--- a/mindspore/core/abstract/abstract_value.h
+++ b/mindspore/core/abstract/abstract_value.h
@@ -535,50 +535,70 @@ using AbstractEllipsisPtr = std::shared_ptr<AbstractEllipsis>;
 
 class AbstractRefKey : public AbstractBase {
  public:
-  AbstractRefKey() : AbstractBase() { set_type(std::make_shared<RefKeyType>()); }
+  AbstractRefKey() : AbstractBase(), ref_key_value_(nullptr) { set_type(std::make_shared<RefKeyType>()); }
   ~AbstractRefKey() override = default;
   MS_DECLARE_PARENT(AbstractRefKey, AbstractBase)
 
   TypePtr BuildType() const override { return std::make_shared<RefKeyType>(); }
   bool operator==(const AbstractRefKey &other) const;
   bool operator==(const AbstractBase &other) const override;
-  AbstractBasePtr Clone() const override { return std::make_shared<AbstractRefKey>(); }
+  AbstractBasePtr Clone() const override {
+    auto cloned = std::make_shared<AbstractRefKey>();
+    cloned->set_value(GetValueTrack());
+    return cloned;
+  }
+  inline void set_value(const ValuePtr &value) {
+    AbstractBase::set_value(value);
+    ref_key_value_ = value->cast<RefKeyPtr>();
+  }
+  RefKeyPtr ref_key_value() const { return ref_key_value_; }
+  AbstractBasePtr Join(const AbstractBasePtr &other) override;
+  AbstractBasePtr Broaden() const override;
   std::string ToString() const override;
+
+ private:
+  // cache for ref_key after build value, when value is null, return nullptr.
+  RefKeyPtr ref_key_value_{nullptr};
 };
 using AbstractRefKeyPtr = std::shared_ptr<AbstractRefKey>;
 
 class AbstractRef : public AbstractBase {
  public:
-  AbstractRef(const AbstractBasePtr &ref_key, const AbstractBasePtr &ref_value, const AbstractBasePtr &ref_origin)
-      : ref_key_(ref_key), ref_(ref_value), ref_origin_(ref_origin) {
-    set_type(std::make_shared<RefType>());
-  }
+  AbstractRef(const AbstractBasePtr &ref_key, const AbstractBasePtr &ref_value, bool need_cast = false,
+              TypePtr cast_target = nullptr);
 
   ~AbstractRef() override = default;
   MS_DECLARE_PARENT(AbstractRef, AbstractBase)
 
   TypePtr BuildType() const override;
+  BaseShapePtr BuildShape() const override;
   bool operator==(const AbstractRef &other) const;
   bool operator==(const AbstractBase &other) const override;
   AbstractBasePtr Clone() const override {
-    return std::make_shared<AbstractRef>(ref_key_->Clone(), ref_->Clone(), ref_origin_->Clone());
+    return std::make_shared<AbstractRef>(ref_key_->Clone(), ref_->Clone(), need_cast_, target_type_);
   }
   std::string ToString() const override;
-  AbstractBasePtr ref() { return ref_; }
-  AbstractBasePtr ref_origin() { return ref_origin_; }
-  AbstractBasePtr ref_key() { return ref_key_; }
+  inline AbstractBasePtr ref() const { return ref_; }
+  inline AbstractBasePtr ref_key() const { return ref_key_; }
+  inline RefKeyPtr ref_key_value() const { return ref_key_value_; }
+  inline TypePtr target_type() const { return target_type_; }
+  inline bool need_cast() const { return need_cast_; }
   AbstractBasePtr Broaden() const override {
-    return std::make_shared<AbstractRef>(ref_key_->Broaden(), ref_->Broaden(), ref_origin_->Broaden());
+    return std::make_shared<AbstractRef>(ref_key_->Broaden(), ref_->Broaden(), need_cast_, target_type_);
   }
   AbstractBasePtr Join(const AbstractBasePtr &other) override;
   std::size_t hash() const override {
-    return ref_key_->hash() ^ ref_->hash() ^ ref_origin_->hash() ^ (std::hash<uint32_t>{}(this->tid()) << 1);
+    return ref_->hash() ^ (std::hash<uint32_t>{}(this->tid()) << 1);  // ref_key_->hash() ^
   }
 
  private:
   AbstractBasePtr ref_key_;
   AbstractBasePtr ref_;
-  AbstractBasePtr ref_origin_;
+  // For mix presicion, only float type need to cast to float16 of float32
+  bool need_cast_;
+  TypePtr target_type_;
+  // cache for ref_key after build value, when value is null, return nullptr.
+  RefKeyPtr ref_key_value_;
 };
 using AbstractRefPtr = std::shared_ptr<AbstractRef>;
 
diff --git a/mindspore/core/abstract/analysis_context.cc b/mindspore/core/abstract/analysis_context.cc
index 228ddf0f54a23adb00a458f079385e287ebc3ced..2270f3c1b03d5da67d811a4941c1b09b60c4a253 100644
--- a/mindspore/core/abstract/analysis_context.cc
+++ b/mindspore/core/abstract/analysis_context.cc
@@ -171,9 +171,7 @@ AnalysisContextPtr AnalysisContext::SpecializeKey() const {
                          }
                          if (arg->isa<AbstractRef>()) {
                            MS_LOG(DEBUG) << "refkey broaden";
-                           auto arg_spec = dyn_cast<AbstractRef>(arg);
-                           auto ret_spec = arg_spec->Broaden();
-                           return ret_spec;
+                           return arg->Broaden();
                          }
                          return arg;
                        });
diff --git a/mindspore/core/base/core_ops.h b/mindspore/core/base/core_ops.h
index a04b983a2ddcb59c19368a104dc8fd4fd94a9578..76bdb4231ede879e233f31793ed409bd6f926de7 100755
--- a/mindspore/core/base/core_ops.h
+++ b/mindspore/core/base/core_ops.h
@@ -121,7 +121,6 @@ inline const PrimitivePtr kPrimEnvAdd = std::make_shared<Primitive>("env_add");
 inline const PrimitivePtr kPrimMakeRefKey = std::make_shared<Primitive>("MakeRefKey");
 inline const PrimitivePtr kPrimGetRefKey = std::make_shared<Primitive>("get_ref_key");
 inline const PrimitivePtr kPrimGetRefValue = std::make_shared<Primitive>("get_ref_value");
-inline const PrimitivePtr kPrimGetRefOrigin = std::make_shared<Primitive>("get_ref_origin");
 inline const PrimitivePtr kPrimInsertGradientOf = std::make_shared<Primitive>("InsertGradientOf");
 inline const PrimitivePtr kPrimHookBackward = std::make_shared<Primitive>("HookBackward");
 inline const PrimitivePtr kPrimPrintShapeType = std::make_shared<Primitive>("PrintShapeType");