diff --git a/paddle/fluid/operators/lookup_table_op.cc b/paddle/fluid/operators/lookup_table_op.cc
index 8b7d7a52704d5452487373d38d75626ea2b239c8..7d88c1c70ac3126f61b4dbb5ab3929b12e67a082 100644
--- a/paddle/fluid/operators/lookup_table_op.cc
+++ b/paddle/fluid/operators/lookup_table_op.cc
@@ -68,7 +68,7 @@ class LookupTableOpMaker : public framework::OpProtoAndCheckerMaker {
              "(Tensor) The input represents embedding tensors, "
              "which is a learnable parameter.");
     AddInput("Ids",
-             "An input with type int32 or int64 "
+             "An input with type int64 "
              "contains the ids to be looked up in W. "
              "The last dimension size must be 1.");
     AddOutput("Out", "The lookup results, which have the same type as W.");
diff --git a/paddle/fluid/operators/lookup_table_v2_op.cc b/paddle/fluid/operators/lookup_table_v2_op.cc
index f1b982356a80ff299b16550b7f7eb57122ced418..24d6df88ceb1754d5554ad573e7a0b64815ab58d 100644
--- a/paddle/fluid/operators/lookup_table_v2_op.cc
+++ b/paddle/fluid/operators/lookup_table_v2_op.cc
@@ -65,7 +65,7 @@ class LookupTableV2OpMaker : public framework::OpProtoAndCheckerMaker {
              "(Tensor) The input represents embedding tensors, "
              "which is a learnable parameter.");
     AddInput("Ids",
-             "An input with type int32 or int64 "
+             "An input with type int64 "
              "contains the ids to be looked up in W. "
              "The last dimension size must be 1.");
     AddOutput("Out", "The lookup results, which have the same type as W.");