diff --git a/core/model.py b/core/model.py
index cb937b7b7fd2d3708c1c483ece2fad21dae2a388..24d3ab4fb165c0e8d4a5cc9c7229555aa74211fb 100755
--- a/core/model.py
+++ b/core/model.py
@@ -23,6 +23,35 @@ class Model(object):
         self._fetch_interval = 20
         self._namespace = "train.model"
         self._platform = envs.get_platform()
+        self._init_slots()
+
+    def _init_slots(self):
+        sparse_slots = envs.get_global_env("sparse_slots", None, "train.reader")
+        dense_slots = envs.get_global_env("dense_slots", None, "train.reader")
+
+        if sparse_slots is not None or dense_slots is not None:
+            sparse_slots = sparse_slots.strip().split(" ")
+            dense_slots = dense_slots.strip().split(" ")
+            dense_slots_shape = [[int(j) for j in i.split(":")[1].strip("[]").split(",")] for i in dense_slots]
+            dense_slots = [i.split(":")[0] for i in dense_slots]
+            self._dense_data_var = []
+            for i in range(len(dense_slots)):
+                l = fluid.layers.data(name=dense_slots[i], shape=dense_slots_shape[i], dtype="float32")
+                self._data_var.append(l)
+                self._dense_data_var.append(l)
+            self._sparse_data_var = []
+            for name in sparse_slots:
+                l = fluid.layers.data(name=name, shape=[1], lod_level=1, dtype="int64")
+                self._data_var.append(l)
+                self._sparse_data_var.append(l)
+
+        dataset_class = envs.get_global_env("dataset_class", None, "train.reader")
+        if dataset_class == "DataLoader":
+            self._init_dataloader()
+
+    def _init_dataloader(self):
+        self._data_loader = fluid.io.DataLoader.from_generator(
+            feed_list=self._data_var, capacity=64, use_double_buffer=False, iterable=False)
 
     def get_inputs(self):
         return self._data_var
diff --git a/core/reader.py b/core/reader.py
index 955afa5e2f9a4d430912ad798de95df3160a3a69..01502761e30a7215c0c916dcde1825a4836280db 100755
--- a/core/reader.py
+++ b/core/reader.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 from __future__ import print_function
 
+import sys
 import abc
 import os
 
@@ -44,3 +45,58 @@ class Reader(dg.MultiSlotDataGenerator):
     @abc.abstractmethod
     def generate_sample(self, line):
         pass
+
+
+class SlotReader(dg.MultiSlotDataGenerator):
+    __metaclass__ = abc.ABCMeta
+
+    def __init__(self, config):
+        dg.MultiSlotDataGenerator.__init__(self)
+        if os.path.isfile(config):
+            with open(config, 'r') as rb:
+                _config = yaml.load(rb.read(), Loader=yaml.FullLoader)
+        else:
+            raise ValueError("reader config only support yaml")
+        envs.set_global_envs(_config)
+        envs.update_workspace()
+
+    def init(self, sparse_slots, dense_slots, padding=0):
+        from operator import mul
+        self.sparse_slots = sparse_slots.strip().split(" ")
+        self.dense_slots = dense_slots.strip().split(" ")
+        self.dense_slots_shape = [reduce(mul, [int(j) for j in i.split(":")[1].strip("[]").split(",")]) for i in self.dense_slots]
+        self.dense_slots = [i.split(":")[0] for i in self.dense_slots]
+        self.slots = self.dense_slots + self.sparse_slots
+        self.slot2index = {}
+        self.visit = {}
+        for i in range(len(self.slots)):
+            self.slot2index[self.slots[i]] = i
+            self.visit[self.slots[i]] = False
+        self.padding = padding
+
+    def generate_sample(self, l):
+        def reader():
+            line = l.strip().split(" ")
+            output = [(i, []) for i in self.slots]
+            for i in line:
+                slot_feasign = i.split(":")
+                slot = slot_feasign[0]
+                if slot not in self.slots:
+                    continue
+                if slot in self.sparse_slots:
+                    feasign = int(slot_feasign[1])
+                else:
+                    feasign = float(slot_feasign[1])
+                output[self.slot2index[slot]][1].append(feasign)
+                self.visit[slot] = True
+            for i in self.visit:
+                slot = i
+                if not self.visit[slot]:
+                    if i in self.dense_slots:
+                        output[self.slot2index[i]][1].extend([self.padding] * self.dense_slots_shape[self.slot2index[i]])
+                    else:
+                        output[self.slot2index[i]][1].extend([self.padding])
+                else:
+                    self.visit[slot] = False
+            yield output
+        return reader
diff --git a/core/trainers/transpiler_trainer.py b/core/trainers/transpiler_trainer.py
index 03e252ca2a0f89ab30cd0c6aecc544918e5e509b..02674424976ae10bb0351aa99f3f0d83d0a5204b 100755
--- a/core/trainers/transpiler_trainer.py
+++ b/core/trainers/transpiler_trainer.py
@@ -23,6 +23,7 @@ from paddle.fluid.incubate.fleet.parameter_server.distribute_transpiler import f
 from paddlerec.core.trainer import Trainer
 from paddlerec.core.utils import envs
 from paddlerec.core.utils import dataloader_instance
+from paddlerec.core.reader import SlotReader
 
 
 class TranspileTrainer(Trainer):
@@ -50,14 +51,23 @@ class TranspileTrainer(Trainer):
             namespace = "evaluate.reader"
             class_name = "EvaluateReader"
 
+        sparse_slots = envs.get_global_env("sparse_slots", None, namespace)
+        dense_slots = envs.get_global_env("dense_slots", None, namespace)
+
+
         batch_size = envs.get_global_env("batch_size", None, namespace)
-        reader_class = envs.get_global_env("class", None, namespace)
         print("batch_size: {}".format(batch_size))
-        reader = dataloader_instance.dataloader(
-            reader_class, state, self._config_yaml)
 
-        reader_class = envs.lazy_instance_by_fliename(reader_class, class_name)
-        reader_ins = reader_class(self._config_yaml)
+        if sparse_slots is None and dense_slots is None:
+            reader_class = envs.get_global_env("class", None, namespace)
+            reader = dataloader_instance.dataloader(
+                reader_class, state, self._config_yaml)
+            reader_class = envs.lazy_instance_by_fliename(reader_class, class_name)
+            reader_ins = reader_class(self._config_yaml)
+        else:
+            reader = dataloader_instance.slotdataloader("", state, self._config_yaml)
+            reader_ins = SlotReader(self._config_yaml)
+
         if hasattr(reader_ins, 'generate_batch_from_trainfiles'):
             dataloader.set_sample_list_generator(reader)
         else:
@@ -93,13 +103,23 @@ class TranspileTrainer(Trainer):
             train_data_path = envs.get_global_env(
                 "test_data_path", None, namespace)
 
+        sparse_slots = envs.get_global_env("sparse_slots", None, namespace)
+        dense_slots = envs.get_global_env("dense_slots", None, namespace)
+
         threads = int(envs.get_runtime_environ("train.trainer.threads"))
         batch_size = envs.get_global_env("batch_size", None, namespace)
         reader_class = envs.get_global_env("class", None, namespace)
         abs_dir = os.path.dirname(os.path.abspath(__file__))
         reader = os.path.join(abs_dir, '../utils', 'dataset_instance.py')
-        pipe_cmd = "python {} {} {} {}".format(
-            reader, reader_class, state, self._config_yaml)
+
+        if sparse_slots is None and dense_slots is None:
+            pipe_cmd = "python {} {} {} {}".format(
+                reader, reader_class, state, self._config_yaml)
+        else:
+            padding = envs.get_global_env("padding", 0, namespace)
+            pipe_cmd = "python {} {} {} {} {} {} {} {}".format(
+                reader, "slot", "slot", self._config_yaml, namespace, \
+                sparse_slots.replace(" ", "#"), dense_slots.replace(" ", "#"), str(padding))
 
         if train_data_path.startswith("paddlerec::"):
             package_base = envs.get_runtime_environ("PACKAGE_BASE")
@@ -147,9 +167,6 @@ class TranspileTrainer(Trainer):
             if not need_save(epoch_id, save_interval, False):
                 return
 
-          #  print("save inference model is not supported now.")
-          #  return
-
             feed_varnames = envs.get_global_env(
                 "save.inference.feed_varnames", None, namespace)
             fetch_varnames = envs.get_global_env(
@@ -218,6 +235,7 @@ class TranspileTrainer(Trainer):
         startup_program = fluid.Program()
         with fluid.unique_name.guard():
             with fluid.program_guard(infer_program, startup_program):
+                self.model._init_slots()
                 self.model.infer_net()
 
         if self.model._infer_data_loader is None:
diff --git a/core/utils/dataloader_instance.py b/core/utils/dataloader_instance.py
index 88b4a9f63662861f41ab2971f4fe751bf5c65ce3..e9154e65ced877747f224c00e50dce01777fb265 100755
--- a/core/utils/dataloader_instance.py
+++ b/core/utils/dataloader_instance.py
@@ -19,6 +19,7 @@ import sys
 from paddlerec.core.utils.envs import lazy_instance_by_fliename
 from paddlerec.core.utils.envs import get_global_env
 from paddlerec.core.utils.envs import get_runtime_environ
+from paddlerec.core.reader import SlotReader
 
 
 def dataloader(readerclass, train, yaml_file):
@@ -63,3 +64,49 @@ def dataloader(readerclass, train, yaml_file):
     if hasattr(reader, 'generate_batch_from_trainfiles'):
         return gen_batch_reader()
     return gen_reader
+
+
+def slotdataloader(readerclass, train, yaml_file):
+    if train == "TRAIN":
+        reader_name = "SlotReader"
+        namespace = "train.reader"
+        data_path = get_global_env("train_data_path", None, namespace)
+    else:
+        reader_name = "SlotReader"
+        namespace = "evaluate.reader"
+        data_path = get_global_env("test_data_path", None, namespace)
+
+    if data_path.startswith("paddlerec::"):
+        package_base = get_runtime_environ("PACKAGE_BASE")
+        assert package_base is not None
+        data_path = os.path.join(package_base, data_path.split("::")[1])
+
+    files = [str(data_path) + "/%s" % x for x in os.listdir(data_path)]
+
+    sparse = get_global_env("sparse_slots", None, namespace)
+    dense = get_global_env("dense_slots", None, namespace)
+    padding = get_global_env("padding", 0, namespace)
+    reader = SlotReader(yaml_file)
+    reader.init(sparse, dense, int(padding))
+
+    def gen_reader():
+        for file in files:
+            with open(file, 'r') as f:
+                for line in f:
+                    line = line.rstrip('\n')
+                    iter = reader.generate_sample(line)
+                    for parsed_line in iter():
+                        if parsed_line is None:
+                            continue
+                        else:
+                            values = []
+                            for pased in parsed_line:
+                                values.append(pased[1])
+                            yield values
+
+    def gen_batch_reader():
+        return reader.generate_batch_from_trainfiles(files)
+
+    if hasattr(reader, 'generate_batch_from_trainfiles'):
+        return gen_batch_reader()
+    return gen_reader
diff --git a/core/utils/dataset_instance.py b/core/utils/dataset_instance.py
index 94997b669a5579cae4a403422c92fe277fa046b6..d6b3742c8eeec86e054e2512085aa014100d2239 100755
--- a/core/utils/dataset_instance.py
+++ b/core/utils/dataset_instance.py
@@ -15,19 +15,33 @@ from __future__ import print_function
 import sys
 
 from paddlerec.core.utils.envs import lazy_instance_by_fliename
+from paddlerec.core.reader import SlotReader
+from paddlerec.core.utils import envs
 
-if len(sys.argv) != 4:
-    raise ValueError("reader only accept 3 argument: 1. reader_class 2.train/evaluate 3.yaml_abs_path")
+if len(sys.argv) < 4:
+    raise ValueError("reader only accept 3 argument: 1. reader_class 2.train/evaluate/slotreader 3.yaml_abs_path")
 
 reader_package = sys.argv[1]
 
-if sys.argv[2] == "TRAIN":
+if sys.argv[2].upper() == "TRAIN":
     reader_name = "TrainReader"
-else:
+elif sys.argv[2].upper() == "EVALUATE":
     reader_name = "EvaluateReader"
+else:
+    reader_name = "SlotReader"
+    namespace = sys.argv[4]
+    sparse_slots = sys.argv[5].replace("#", " ")
+    dense_slots = sys.argv[6].replace("#", " ")
+    padding = int(sys.argv[7])
 
 yaml_abs_path = sys.argv[3]
-reader_class = lazy_instance_by_fliename(reader_package, reader_name)
-reader = reader_class(yaml_abs_path)
-reader.init()
-reader.run_from_stdin()
+
+if reader_name != "SlotReader":
+    reader_class = lazy_instance_by_fliename(reader_package, reader_name)
+    reader = reader_class(yaml_abs_path)
+    reader.init()
+    reader.run_from_stdin()
+else:
+    reader = SlotReader(yaml_abs_path)
+    reader.init(sparse_slots, dense_slots, padding)
+    reader.run_from_stdin()
diff --git a/models/contentunderstanding/readme.md b/models/contentunderstanding/readme.md
index 06be7106b287149d24b56773689dad08708a064f..410f937e6ce91f8a1cadba05c9812da4babfd0f5 100644
--- a/models/contentunderstanding/readme.md
+++ b/models/contentunderstanding/readme.md
@@ -88,18 +88,3 @@ python -m paddlerec.run -m paddlerec.models.contentunderstanding.classification
 |       ag news dataset        |       TagSpace       |       --        |       --          |       --          |       --          |
 |       --        |       Classification       |       --        |       --          |       --          |       --          |
 
-
-## 分布式
-### 模型训练性能 (样本/s)
-|       数据集        |       模型       |       单机        |       同步 (4节点)          |       同步 (8节点)          |  同步 (16节点)          |  同步 (32节点)          |
-| :------------------: | :--------------------: | :---------: |:---------: |:---------: |:---------: |:---------: |
-|       --        |       TagSpace       |       --        |       --          |       --          |  --          |  --          |
-|       --        |       Classification       |       --        |       --          |       --          |   --          |   --          |
-
-
-----
-
-|       数据集        |       模型       |       单机        |       异步 (4节点)          |       异步 (8节点)          |  异步 (16节点)          |  异步 (32节点)          |
-| :------------------: | :--------------------: | :---------: |:---------: |:---------: |:---------: |:---------: |
-|       --        |       TagSpace       |       --        |       --          |       --          |  --          |  --          |
-|       --        |       Classification       |       --        |       --          |       --          |   --          |   --          |