diff --git a/python/fate/arch/dataframe/_frame_reader.py b/python/fate/arch/dataframe/_frame_reader.py
index 26baf8a928..cec673cc88 100644
--- a/python/fate/arch/dataframe/_frame_reader.py
+++ b/python/fate/arch/dataframe/_frame_reader.py
@@ -86,12 +86,13 @@ def _dense_format_to_frame(self, ctx, table):
         from .ops._indexer import get_partition_order_by_raw_table
         partition_order_mappings = get_partition_order_by_raw_table(table)
         # partition_order_mappings = _get_partition_order(table)
-        functools.partial(_to_blocks,
-                          data_manager=data_manager,
-                          retrieval_index_dict=retrieval_index_dict,
-                          partition_order_mappings=partition_order_mappings)
+        table = table.mapValues(lambda value: value.split(self._delimiter, -1))
+        to_block_func = functools.partial(_to_blocks,
+                                          data_manager=data_manager,
+                                          retrieval_index_dict=retrieval_index_dict,
+                                          partition_order_mappings=partition_order_mappings)
         block_table = table.mapPartitions(
-            _to_blocks,
+            to_block_func,
             use_previous_behavior=False
         )
 
diff --git a/python/fate/arch/dataframe/manager/block_manager.py b/python/fate/arch/dataframe/manager/block_manager.py
index 763c42df37..50a96bf7a6 100644
--- a/python/fate/arch/dataframe/manager/block_manager.py
+++ b/python/fate/arch/dataframe/manager/block_manager.py
@@ -220,7 +220,10 @@ def __init__(self, *args, **kwargs):
 
     @staticmethod
     def convert_block(block):
-        return  torch.tensor(block, dtype=torch.int32)
+        try:
+            return torch.tensor(block, dtype=torch.int32)
+        except ValueError:
+            return torch.tensor(np.array(block, dtype="int32"), dtype=torch.int32)
 
 
 class Int64Block(Block):
@@ -230,7 +233,10 @@ def __init__(self, *args, **kwargs):
 
     @staticmethod
     def convert_block(block):
-        return  torch.tensor(block, dtype=torch.int64)
+        try:
+            return torch.tensor(block, dtype=torch.int64)
+        except ValueError:
+            return torch.tensor(np.array(block, dtype="int64"), dtype=torch.int64)
 
 
 class Float32Block(Block):
@@ -240,7 +246,10 @@ def __init__(self, *args, **kwargs):
 
     @staticmethod
     def convert_block(block):
-        return torch.tensor(block, dtype=torch.float32)
+        try:
+            return torch.tensor(block, dtype=torch.float32)
+        except ValueError:
+            return torch.tensor(np.array(block, dtype="float32"), dtype=torch.float32)
 
 
 class Float64Block(Block):
@@ -250,7 +259,10 @@ def __init__(self, *args, **kwargs):
 
     @staticmethod
     def convert_block(block):
-        return torch.tensor(block, dtype=torch.float64)
+        try:
+            return torch.tensor(block, dtype=torch.float64)
+        except ValueError:
+            return torch.tensor(np.array(block, dtype="float64"), dtype=torch.float64)
 
 
 class BoolBlock(Block):
@@ -260,7 +272,10 @@ def __init__(self, *args, **kwargs):
 
     @staticmethod
     def convert_block(block):
-        return  torch.tensor(block, dtype=torch.bool)
+        try:
+            return torch.tensor(block, dtype=torch.bool)
+        except ValueError:
+            return torch.tensor(np.array(block, dtype="bool"), dtype=torch.bool)
 
 
 class IndexBlock(Block):
diff --git a/python/fate/components/components/dataframe_transformer.py b/python/fate/components/components/dataframe_transformer.py
index 5b73f31ee6..01b38e32ec 100644
--- a/python/fate/components/components/dataframe_transformer.py
+++ b/python/fate/components/components/dataframe_transformer.py
@@ -14,14 +14,13 @@
 #  limitations under the License.
 #
 from fate.components.core import LOCAL, Role, cpn
-from typing import Union, List, Dict
 
 
 @cpn.component(roles=[LOCAL])
 @cpn.table_input("table", roles=[LOCAL])
 @cpn.dataframe_output("dataframe_output", roles=[LOCAL])
-@cpn.parameter("namespace", type=str, default=",", optional=True)
-@cpn.parameter("name", type=str, default="dense", optional=True)
+@cpn.parameter("namespace", type=str, default=None, optional=True)
+@cpn.parameter("name", type=str, default=None, optional=True)
 @cpn.parameter("anonymous_role", type=str, default=None, optional=True)
 @cpn.parameter("anonymous_party_id", type=str, default=None, optional=True)
 def dataframe_transformer(
@@ -35,6 +34,7 @@ def dataframe_transformer(
     anonymous_party_id,
 ):
     from fate.arch.dataframe import TableReader
+
     metadata = table.schema
     table_reader = TableReader(
         sample_id_name=metadata.get("sample_id_name", None),
@@ -57,4 +57,4 @@ def dataframe_transformer(
     )
 
     df = table_reader.to_frame(ctx, table)
-    ctx.writer(dataframe_output).write(df, namespace=namespace, name=name)
+    dataframe_output.write(ctx, df, name=name, namespace=namespace)