diff --git a/README.md b/README.md
index 92f0177..a9d3881 100644
--- a/README.md
+++ b/README.md
@@ -156,7 +156,7 @@ The user password for Elasticsearch, defaults to `None`.
 
 ## Interface
 
-Insert documentation into Milvus as a knowledge base.
+Insert documentation into Milvus(and Elasticsearch) as a knowledge base.
 
 **Parameters:**
 
@@ -166,10 +166,10 @@ Path or url of the document to be loaded.
 
 ***project_name***: str
 
-The collection name for Milvus vector database, also the index name of elasticsearch.
+The collection name for Milvus vector database, also the index name of Elasticsearch.
 
 <br />
 
-**Returns:** MutationResult
+**Returns:** dict
 
-A MutationResult after inserting Milvus.
+A dictionary includes 'milvus_res' and 'es_res'.
diff --git a/osschat_insert.py b/osschat_insert.py
index f91e6f4..3893947 100644
--- a/osschat_insert.py
+++ b/osschat_insert.py
@@ -110,6 +110,8 @@ def osschat_insert_pipe(config):
         p = (
             p.map('sentence', 'es_sentence', lambda x: {'sentence': x})
              .map(('project_name', 'es_sentence'), 'es_res', es_index_op)
+             .map(('milvus_res', 'es_res'), 'res', lambda x, y: {'milvus_res': x, 'es_res': y})
         )
-        return p.output('milvus_res', 'es_res')
-    return p.output('milvus_res')
+    else:
+        p = p.map('milvus_res', 'res', lambda x: {'milvus_res': x, 'es_res': None})
+    return p.output('res')