diff --git a/demos/custom_streaming_asr/README.md b/demos/custom_streaming_asr/README.md
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+([简体中文](./README_cn.md)|English)
+
+# Customized Auto Speech Recognition
+
+## introduction
+In some cases, we need to recognize the specific rare words with high accuracy. eg: address recognition in navigation apps. customized ASR can slove those issues.
+
+this demo is customized for expense account, which need to recognize rare address.
+
+* G with slot: 打车到 "address_slot"。
+![](https://ai-studio-static-online.cdn.bcebos.com/28d9ef132a7f47a895a65ae9e5c4f55b8f472c9f3dd24be8a2e66e0b88b173a4)
+
+* this is address slot wfst, you can add the address which want to recognize.
+![](https://ai-studio-static-online.cdn.bcebos.com/47c89100ef8c465bac733605ffc53d76abefba33d62f4d818d351f8cea3c8fe2)
+
+* after replace operation, G = fstreplace(G_with_slot, address_slot), we will get the customized graph.
+![](https://ai-studio-static-online.cdn.bcebos.com/60a3095293044f10b73039ab10c7950d139a6717580a44a3ba878c6e74de402b)  
+
+## Usage
+### 1. Installation
+install paddle:2.2.2 docker.
+```
+sudo nvidia-docker pull registry.baidubce.com/paddlepaddle/paddle:2.2.2
+
+sudo nvidia-docker run --privileged  --net=host --ipc=host -it --rm -v $PWD:/paddle --name=paddle_demo_docker registry.baidubce.com/paddlepaddle/paddle:2.2.2 /bin/bash 
+```
+
+### 2. demo
+* run websocket_server.sh.  This script will download resources and libs, and launch the service.
+```
+bash websocket_server.sh
+```
+this script run in two steps:
+1. download the resources.tar.gz, those direcotries will be found in resource directory.
+model: acustic model
+graph: the decoder graph (TLG.fst)  
+lib: some libs  
+bin: binary  
+data: audio and wav.scp
+
+2. websocket_server_main launch the service.
+some params:
+port: the service port  
+graph_path: the decoder graph path  
+model_path: acustic model path  
+please refer other params in those files:  
+PaddleSpeech/speechx/speechx/decoder/param.h  
+PaddleSpeech/speechx/examples/ds2_ol/websocket/websocket_server_main.cc  
+
+* In other terminal, run script websocket_client.sh, the client will send data and get the results.
+```
+bash websocket_client.sh
+```
+websocket_client_main will launch the client, the wav_scp is the wav set, port is the server service port.
+
+* result:
+In the log of client, you will see the message below:
+```
+0513 10:58:13.827821 41768 recognizer_test_main.cc:56] wav len (sample): 70208
+I0513 10:58:13.884493 41768 feature_cache.h:52] set finished
+I0513 10:58:24.247171 41768 paddle_nnet.h:76] Tensor neml: 10240
+I0513 10:58:24.247249 41768 paddle_nnet.h:76] Tensor neml: 10240
+LOG ([5.5.544~2-f21d7]:main():decoder/recognizer_test_main.cc:90)  the result of case_10 is 五月十二日二十二点三十六分加班打车回家四十一元
+```
\ No newline at end of file
diff --git a/demos/custom_streaming_asr/README_cn.md b/demos/custom_streaming_asr/README_cn.md
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+(简体中文|[English](./README.md))
+
+# 定制化语音识别演示
+## 介绍
+在一些场景中，识别系统需要高精度的识别一些稀有词，例如导航软件中地名识别。而通过定制化识别可以满足这一需求。  
+
+这个 demo 是打车报销单的场景识别，需要识别一些稀有的地名，可以通过如下操作实现。
+
+* G with slot: 打车到 "address_slot"。
+![](https://ai-studio-static-online.cdn.bcebos.com/28d9ef132a7f47a895a65ae9e5c4f55b8f472c9f3dd24be8a2e66e0b88b173a4)
+
+* 这是address slot wfst, 可以添加一些需要识别的地名.
+![](https://ai-studio-static-online.cdn.bcebos.com/47c89100ef8c465bac733605ffc53d76abefba33d62f4d818d351f8cea3c8fe2)
+
+* 通过replace 操作, G = fstreplace(G_with_slot, address_slot), 最终可以得到定制化的解码图。
+![](https://ai-studio-static-online.cdn.bcebos.com/60a3095293044f10b73039ab10c7950d139a6717580a44a3ba878c6e74de402b)  
+
+## 使用方法
+### 1. 配置环境
+安装paddle:2.2.2 docker镜像。
+```
+sudo nvidia-docker pull registry.baidubce.com/paddlepaddle/paddle:2.2.2
+
+sudo nvidia-docker run --privileged  --net=host --ipc=host -it --rm -v $PWD:/paddle --name=paddle_demo_docker registry.baidubce.com/paddlepaddle/paddle:2.2.2 /bin/bash 
+```
+
+### 2. 演示
+* 运行如下命令，完成相关资源和库的下载和服务启动。
+```
+bash websocket_server.sh
+```
+上面脚本完成了如下两个功能：
+1. 完成resource.tar.gz下载，解压后,会在resource中发现如下目录：
+model: 声学模型
+graph: 解码构图
+lib: 相关库
+bin: 运行程序
+data: 语音数据
+
+2. 通过websocket_server_main来启动服务。
+这里简单的介绍几个参数:
+port是服务端口，
+graph_path用来指定解码图文件，
+model相关参数用来指定声学模型文件。
+其他参数说明可参见代码：
+PaddleSpeech/speechx/speechx/decoder/param.h
+PaddleSpeech/speechx/examples/ds2_ol/websocket/websocket_server_main.cc
+
+* 在另一个终端中， 通过client发送数据，得到结果。运行如下命令：
+```
+bash websocket_client.sh
+```
+通过websocket_client_main来启动client服务，其中$wav_scp是发送的语音句子集合，port为服务端口。
+
+* 结果：
+client的log中可以看到如下类似的结果
+```
+0513 10:58:13.827821 41768 recognizer_test_main.cc:56] wav len (sample): 70208
+I0513 10:58:13.884493 41768 feature_cache.h:52] set finished
+I0513 10:58:24.247171 41768 paddle_nnet.h:76] Tensor neml: 10240
+I0513 10:58:24.247249 41768 paddle_nnet.h:76] Tensor neml: 10240
+LOG ([5.5.544~2-f21d7]:main():decoder/recognizer_test_main.cc:90)  the result of case_10 is 五月十二日二十二点三十六分加班打车回家四十一元
+```
diff --git a/demos/custom_streaming_asr/path.sh b/demos/custom_streaming_asr/path.sh
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+++ b/demos/custom_streaming_asr/path.sh
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+export LD_LIBRARY_PATH=$PWD/resource/lib
+export PATH=$PATH:$PWD/resource/bin
diff --git a/demos/custom_streaming_asr/setup_docker.sh b/demos/custom_streaming_asr/setup_docker.sh
new file mode 100644
index 00000000..329a75db
--- /dev/null
+++ b/demos/custom_streaming_asr/setup_docker.sh
@@ -0,0 +1 @@
+sudo nvidia-docker run --privileged  --net=host --ipc=host -it --rm -v $PWD:/paddle --name=paddle_demo_docker registry.baidubce.com/paddlepaddle/paddle:2.2.2 /bin/bash
diff --git a/demos/custom_streaming_asr/websocket_client.sh b/demos/custom_streaming_asr/websocket_client.sh
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index 00000000..ede076ca
--- /dev/null
+++ b/demos/custom_streaming_asr/websocket_client.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+set +x
+set -e
+
+. path.sh
+# input
+data=$PWD/data
+
+# output
+wav_scp=wav.scp
+
+export GLOG_logtostderr=1
+
+# websocket client
+websocket_client_main \
+    --wav_rspecifier=scp:$data/$wav_scp \
+    --streaming_chunk=0.36 \
+    --port=8881
diff --git a/demos/custom_streaming_asr/websocket_server.sh b/demos/custom_streaming_asr/websocket_server.sh
new file mode 100755
index 00000000..041c345b
--- /dev/null
+++ b/demos/custom_streaming_asr/websocket_server.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+set +x
+set -e
+
+export GLOG_logtostderr=1
+
+. path.sh
+#test websocket server 
+
+model_dir=./resource/model
+graph_dir=./resource/graph
+cmvn=./data/cmvn.ark
+
+
+#paddle_asr_online/resource.tar.gz
+if [ ! -f $cmvn ]; then
+    wget -c https://paddlespeech.bj.bcebos.com/s2t/paddle_asr_online/resource.tar.gz
+    tar xzfv resource.tar.gz
+    ln -s ./resource/data .
+fi
+
+websocket_server_main \
+    --cmvn_file=$cmvn \
+    --streaming_chunk=0.1 \
+    --use_fbank=true \
+    --model_path=$model_dir/avg_10.jit.pdmodel \
+    --param_path=$model_dir/avg_10.jit.pdiparams \
+    --model_cache_shapes="5-1-2048,5-1-2048" \
+    --model_output_names=softmax_0.tmp_0,tmp_5,concat_0.tmp_0,concat_1.tmp_0 \
+    --word_symbol_table=$graph_dir/words.txt \
+    --graph_path=$graph_dir/TLG.fst --max_active=7500 \
+    --port=8881 \
+    --acoustic_scale=12