diff --git a/tutorials/OsdSample/C++/ExternalOsdInstances.json b/tutorials/OsdSample/C++/ExternalOsdInstances.json
index 3ce60ac44d3de27a3ce41b85c30edabe8fed67bf..ed6083e31f533e57b0f735ba7667c22d549e5e12 100644
--- a/tutorials/OsdSample/C++/ExternalOsdInstances.json
+++ b/tutorials/OsdSample/C++/ExternalOsdInstances.json
@@ -1,78 +1,78 @@
 {
-  "osdInstancesVec": [
-    {
-      "osdTextVec": [
-        {
-          "text": "Hello, world!",
-          "x0": 150,
-          "y0": 400,
-          "fontFace": 1,
-          "fontScale": 2.0,
-          "osdParams": {
-            "scalorB": 60,
-            "scalorG": 20,
-            "scalorR": 220,
-            "thickness": 2,
-            "lineType": 8
-          }
-        }
-      ],
-      "osdRectVec": [
-        {
-          "x0": 0,
-          "y0": 0,
-          "x1": 512,
-          "y1": 512,
-          "osdParams": {
-            "scalorB": 42,
-            "scalorG": 42,
-            "scalorR": 165,
-            "thickness": 5,
-            "lineType": 8
-          }
-        }
-      ],
-      "osdCircleVec": [
-        {
-          "x0": 0,
-          "y0": 320,
-          "radius": 10,
-          "osdParams": {
-            "scalorB": 0,
-            "scalorG": 128,
-            "scalorR": 255,
-            "thickness": -1,
-            "lineType": 8
-          }
-        },
-        {
-          "x0": 512,
-          "y0": 320,
-          "radius": 10,
-          "osdParams": {
-            "scalorB": 0,
-            "scalorG": 128,
-            "scalorR": 255,
-            "thickness": -1,
-            "lineType": 8
-          }
-        }
-      ],
-      "osdLineVec": [
-        {
-          "x0": 0,
-          "y0": 320,
-          "x1": 512,
-          "y1": 320,
-          "osdParams": {
-            "scalorB": 255,
-            "scalorG": 128,
-            "scalorR": 0,
-            "thickness": 5,
-            "lineType": 8
-          }
-        }
-      ]
-    }
-  ]
+  "osdInstancesVec": [
+    {
+      "osdTextVec": [
+        {
+          "text": "Hello, world!",
+          "x0": 150,
+          "y0": 400,
+          "fontFace": 1,
+          "fontScale": 2.0,
+          "osdParams": {
+            "scalorB": 60,
+            "scalorG": 20,
+            "scalorR": 220,
+            "thickness": 2,
+            "lineType": 8
+          }
+        }
+      ],
+      "osdRectVec": [
+        {
+          "x0": 0,
+          "y0": 0,
+          "x1": 512,
+          "y1": 512,
+          "osdParams": {
+            "scalorB": 42,
+            "scalorG": 42,
+            "scalorR": 165,
+            "thickness": 5,
+            "lineType": 8
+          }
+        }
+      ],
+      "osdCircleVec": [
+        {
+          "x0": 0,
+          "y0": 320,
+          "radius": 10,
+          "osdParams": {
+            "scalorB": 0,
+            "scalorG": 128,
+            "scalorR": 255,
+            "thickness": -1,
+            "lineType": 8
+          }
+        },
+        {
+          "x0": 512,
+          "y0": 320,
+          "radius": 10,
+          "osdParams": {
+            "scalorB": 0,
+            "scalorG": 128,
+            "scalorR": 255,
+            "thickness": -1,
+            "lineType": 8
+          }
+        }
+      ],
+      "osdLineVec": [
+        {
+          "x0": 0,
+          "y0": 320,
+          "x1": 512,
+          "y1": 320,
+          "osdParams": {
+            "scalorB": 255,
+            "scalorG": 128,
+            "scalorR": 0,
+            "thickness": 5,
+            "lineType": 8
+          }
+        }
+      ]
+    }
+  ]
 }
\ No newline at end of file
diff --git a/tutorials/OsdSample/C++/main.cpp b/tutorials/OsdSample/C++/main.cpp
index 7dc9ceb63382878a8f7dda4fac776e474b88f662..d2dc1b711ed7ec25b52c05191d7d1a5c940acc2c 100644
--- a/tutorials/OsdSample/C++/main.cpp
+++ b/tutorials/OsdSample/C++/main.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include 
+#include <cstring>
 #include <google/protobuf/util/json_util.h>
 #include "MxBase/Log/Log.h"
 #include "MxStream/StreamManager/MxStreamManager.h"
@@ -144,12 +144,12 @@ int main(int argc, char* argv[])
 
     // send osd instances protobuf.
     std::string result = ReadFileContent("./ExternalOsdInstances.json");
-    auto osdInstancesList = std::make_shared();
+    auto osdInstancesList = std::make_shared<MxTools::MxpiOsdInstancesList>();
     google::protobuf::util::JsonStringToMessage(result, osdInstancesList.get());
     MxStream::MxstProtobufIn protobuf;
-    protobuf.key = "mxpi_parallel2serial0";
-    protobuf.messagePtr = std::static_pointer_cast(osdInstancesList);
-    std::vector dataBufferVec;
+    protobuf.key = "appsrc1";
+    protobuf.messagePtr = std::static_pointer_cast<google::protobuf::Message>(osdInstancesList);
+    std::vector<MxStream::MxstProtobufIn> dataBufferVec;
     dataBufferVec.push_back(protobuf);
     // send data into stream
     ret = mxStreamManager.SendProtobuf(streamName, 1, dataBufferVec);
diff --git a/tutorials/OsdSample/pipeline/SampleOsd.pipeline b/tutorials/OsdSample/pipeline/SampleOsd.pipeline
index eebe9bc79f4a35fdd9eee02e3f539e672c2f1ed1..9757602fb35b1d93f3fcf95e3699c27eb8728448 100644
--- a/tutorials/OsdSample/pipeline/SampleOsd.pipeline
+++ b/tutorials/OsdSample/pipeline/SampleOsd.pipeline
@@ -1,56 +1,55 @@
 {
-    "encoder":{
-        "stream_config":{
-            "deviceId":"0"
-        },
-        "appsrc0": {
-            "props": {
-                "blocksize": "40960000"
-            },
-            "factory": "appsrc",
-            "next": "mxpi_imagedecoder0"
-        },
-        "mxpi_imagedecoder0":{
-            "factory":"mxpi_imagedecoder",
-            "next":"mxpi_imageresize0"
-        },
-        "mxpi_imageresize0":{
-            "props":{
-                "resizeHeight":"512",
-                "resizeWidth":"512"
-            },
-            "factory":"mxpi_imageresize",
-            "next":"mxpi_aicpuosd0:0"
-        },
-        "appsrc1": {
-            "props": {
-                "blocksize": "40960000"
-            },
-            "factory": "appsrc",
-            "next":"mxpi_parallel2serial0"
-        },
-        "mxpi_parallel2serial0":{
-            "factory":"mxpi_parallel2serial",
-            "next":"mxpi_aicpuosd0:1"
-        },
-        "mxpi_aicpuosd0":{
-            "props": {
-    "dataSourceOsd":"mxpi_parallel2serial0",
-    "dataSourceImage":"mxpi_imagedecoder0"
-            },
-            "factory":"mxpi_opencvosd",
-            "next":"mxpi_imageencoder0"
-        },
-        "mxpi_imageencoder0":{
-            "factory":"mxpi_imageencoder",
-            "next":"appsink0"
-        },
-        "appsink0":{
-            "props": {
-    "blocksize":"40960000",
-                "location": "./testout.jpg"
-            },
-            "factory":"filesink"
-        }
-    }
+    "encoder":{
+        "stream_config":{
+            "deviceId":"0"
+        },
+        "appsrc0":{
+            "props":{
+                "blocksize":"40960000"
+            },
+            "factory":"appsrc",
+            "next":"mxpi_imagedecoder0"
+        },
+        "mxpi_imagedecoder0":{
+            "factory":"mxpi_imagedecoder",
+            "next":"mxpi_imageresize0"
+        },
+        "mxpi_imageresize0":{
+            "props":{
+                "resizeHeight":"512",
+                "resizeWidth":"512"
+            },
+            "factory":"mxpi_imageresize",
+            "next":"mxpi_opencvosd0:0"
+        },
+        "appsrc1":{
+            "props":{
+                "blocksize":"40960000"
+            },
+            "factory":"appsrc",
+            "next":"mxpi_osdinstancemerger0"
+        },
+        "mxpi_osdinstancemerger0":{
+            "props":{
+                "dataSourceList":"appsrc1"
+            },
+            "factory":"mxpi_osdinstancemerger",
+            "next":"mxpi_opencvosd0:1"
+        },
+        "mxpi_opencvosd0":{
+            "factory":"mxpi_opencvosd",
+            "next":"mxpi_imageencoder0"
+        },
+        "mxpi_imageencoder0":{
+            "factory":"mxpi_imageencoder",
+            "next":"appsink0"
+        },
+        "appsink0":{
+            "props":{
+                "blocksize":"40960000",
+                "location":"./testout.jpg"
+            },
+            "factory":"filesink"
+        }
+    }
 }
\ No newline at end of file
diff --git a/tutorials/OsdSample/python/ExternalOsdInstances.json b/tutorials/OsdSample/python/ExternalOsdInstances.json
index 3ce60ac44d3de27a3ce41b85c30edabe8fed67bf..ed6083e31f533e57b0f735ba7667c22d549e5e12 100644
--- a/tutorials/OsdSample/python/ExternalOsdInstances.json
+++ b/tutorials/OsdSample/python/ExternalOsdInstances.json
@@ -1,78 +1,78 @@
 {
-  "osdInstancesVec": [
-    {
-      "osdTextVec": [
-        {
-          "text": "Hello, world!",
-          "x0": 150,
-          "y0": 400,
-          "fontFace": 1,
-          "fontScale": 2.0,
-          "osdParams": {
-            "scalorB": 60,
-            "scalorG": 20,
-            "scalorR": 220,
-            "thickness": 2,
-            "lineType": 8
-          }
-        }
-      ],
-      "osdRectVec": [
-        {
-          "x0": 0,
-          "y0": 0,
-          "x1": 512,
-          "y1": 512,
-          "osdParams": {
-            "scalorB": 42,
-            "scalorG": 42,
-            "scalorR": 165,
-            "thickness": 5,
-            "lineType": 8
-          }
-        }
-      ],
-      "osdCircleVec": [
-        {
-          "x0": 0,
-          "y0": 320,
-          "radius": 10,
-          "osdParams": {
-            "scalorB": 0,
-            "scalorG": 128,
-            "scalorR": 255,
-            "thickness": -1,
-            "lineType": 8
-          }
-        },
-        {
-          "x0": 512,
-          "y0": 320,
-          "radius": 10,
-          "osdParams": {
-            "scalorB": 0,
-            "scalorG": 128,
-            "scalorR": 255,
-            "thickness": -1,
-            "lineType": 8
-          }
-        }
-      ],
-      "osdLineVec": [
-        {
-          "x0": 0,
-          "y0": 320,
-          "x1": 512,
-          "y1": 320,
-          "osdParams": {
-            "scalorB": 255,
-            "scalorG": 128,
-            "scalorR": 0,
-            "thickness": 5,
-            "lineType": 8
-          }
-        }
-      ]
-    }
-  ]
+  "osdInstancesVec": [
+    {
+      "osdTextVec": [
+        {
+          "text": "Hello, world!",
+          "x0": 150,
+          "y0": 400,
+          "fontFace": 1,
+          "fontScale": 2.0,
+          "osdParams": {
+            "scalorB": 60,
+            "scalorG": 20,
+            "scalorR": 220,
+            "thickness": 2,
+            "lineType": 8
+          }
+        }
+      ],
+      "osdRectVec": [
+        {
+          "x0": 0,
+          "y0": 0,
+          "x1": 512,
+          "y1": 512,
+          "osdParams": {
+            "scalorB": 42,
+            "scalorG": 42,
+            "scalorR": 165,
+            "thickness": 5,
+            "lineType": 8
+          }
+        }
+      ],
+      "osdCircleVec": [
+        {
+          "x0": 0,
+          "y0": 320,
+          "radius": 10,
+          "osdParams": {
+            "scalorB": 0,
+            "scalorG": 128,
+            "scalorR": 255,
+            "thickness": -1,
+            "lineType": 8
+          }
+        },
+        {
+          "x0": 512,
+          "y0": 320,
+          "radius": 10,
+          "osdParams": {
+            "scalorB": 0,
+            "scalorG": 128,
+            "scalorR": 255,
+            "thickness": -1,
+            "lineType": 8
+          }
+        }
+      ],
+      "osdLineVec": [
+        {
+          "x0": 0,
+          "y0": 320,
+          "x1": 512,
+          "y1": 320,
+          "osdParams": {
+            "scalorB": 255,
+            "scalorG": 128,
+            "scalorR": 0,
+            "thickness": 5,
+            "lineType": 8
+          }
+        }
+      ]
+    }
+  ]
 }
\ No newline at end of file
diff --git a/tutorials/OsdSample/python/main.py b/tutorials/OsdSample/python/main.py
index 005089bb43ea83d1838dd260e4fad6acd015354e..92684e120bc694dfd799baed52748e1411ca9431 100644
--- a/tutorials/OsdSample/python/main.py
+++ b/tutorials/OsdSample/python/main.py
@@ -19,54 +19,54 @@ limitations under the License.
 
 import json
 import time
-from StreamManagerApi import *
+from stream_manager_api import *
 import MxpiOSDType_pb2 as MxpiOSDType
 from google.protobuf.json_format import *
 
 if __name__ == '__main__':
     # init stream manager
-    streamManagerApi = StreamManagerApi()
-    ret = streamManagerApi.InitManager()
+    stream_manager_api = stream_manager_api()
+    ret = stream_manager_api.InitManager()
     if ret != 0:
         print("Failed to init Stream manager, ret=%s" % str(ret))
         exit()
 
     # create streams by pipeline config file
     with open("../pipeline/SampleOsd.pipeline", 'rb') as f:
-        pipelineStr = f.read()
-    ret = streamManagerApi.CreateMultipleStreams(pipelineStr)
+        pipeline_str = f.read()
+    ret = stream_manager_api.CreateMultipleStreams(pipeline_str)
     if ret != 0:
         print("Failed to create Stream, ret=%s" % str(ret))
         exit()
 
     # Construct the input of the stream
-    dataInput = MxDataInput()
+    data_input = Mxdata_input()
     with open("test.jpg", 'rb') as f:
-        dataInput.data = f.read()
+        data_input.data = f.read()
 
     # Send image.
-    streamName = b'encoder'
-    inPluginId = 0
-    ret = streamManagerApi.SendData(streamName, inPluginId, dataInput)
+    stream_name = b'encoder'
+    in_plugin_id = 0
+    ret = stream_manager_api.SendData(stream_name, in_plugin_id, data_input)
     if ret < 0:
         print("Failed to send data to stream.")
         exit()
 
     # Send osd instances protobuf.
     with open("ExternalOsdInstances.json", "r") as f:
-        messageJson = json.load(f)
-    print(messageJson)
-    inPluginId = 1
-    osdInstancesList = MxpiOSDType.MxpiOsdInstancesList()
-    osdInstancesList = ParseDict(messageJson, osdInstancesList)
+        message_json = json.load(f)
+    print(message_json)
+    in_plugin_id = 1
+    osd_instances_list = MxpiOSDType.Mxpiosd_instances_list()
+    osd_instances_list = ParseDict(message_json, osd_instances_list)
 
-    protobufVec = InProtobufVector()
+    protobuf_vec = Inprotobuf_vector()
     protobuf = MxProtobufIn()
-    protobuf.key = b'mxpi_parallel2serial0'
-    protobuf.type = b'MxTools.MxpiOsdInstancesList'
-    protobuf.protobuf = osdInstancesList.SerializeToString()
-    protobufVec.push_back(protobuf)
-    ret = streamManagerApi.SendProtobuf(streamName, inPluginId, protobufVec)
+    protobuf.key = b'appsrc1'
+    protobuf.type = b'MxTools.Mxpiosd_instances_list'
+    protobuf.protobuf = osd_instances_list.SerializeToString()
+    protobuf_vec.push_back(protobuf)
+    ret = stream_manager_api.SendProtobuf(stream_name, in_plugin_id, protobuf_vec)
     if ret < 0:
         print("Failed to send protobuf to stream.")
         exit()
@@ -74,4 +74,4 @@ if __name__ == '__main__':
     time.sleep(2)
 
     # destroy streams
-    streamManagerApi.DestroyAllStreams()
+    stream_manager_api.DestroyAllStreams()