diff --git a/demos/streaming_asr_server/conf/application.yaml b/demos/streaming_asr_server/conf/application.yaml
index d446e13b6e1..b1554e41593 100644
--- a/demos/streaming_asr_server/conf/application.yaml
+++ b/demos/streaming_asr_server/conf/application.yaml
@@ -27,7 +27,6 @@ asr_online:
     lang: 'zh'
     sample_rate: 16000
     cfg_path: 
-    decode_method: 
     num_decoding_left_chunks: -1
     force_yes: True
     device: 'cpu' # cpu or gpu:id
diff --git a/demos/streaming_asr_server/conf/ws_conformer_application.yaml b/demos/streaming_asr_server/conf/ws_conformer_application.yaml
index 01bb1e9c90a..62d7d3c35dc 100644
--- a/demos/streaming_asr_server/conf/ws_conformer_application.yaml
+++ b/demos/streaming_asr_server/conf/ws_conformer_application.yaml
@@ -27,7 +27,6 @@ asr_online:
     lang: 'zh'
     sample_rate: 16000
     cfg_path: 
-    decode_method: 
     num_decoding_left_chunks: -1
     force_yes: True
     device: 'cpu' # cpu or gpu:id
diff --git a/demos/streaming_asr_server/conf/ws_conformer_talcs_application.yaml b/demos/streaming_asr_server/conf/ws_conformer_talcs_application.yaml
index bdeadd5e938..e2cd82da6b2 100644
--- a/demos/streaming_asr_server/conf/ws_conformer_talcs_application.yaml
+++ b/demos/streaming_asr_server/conf/ws_conformer_talcs_application.yaml
@@ -28,7 +28,6 @@ asr_online:
     lang: 'zh_en'
     sample_rate: 16000
     cfg_path: 
-    decode_method: 
     num_decoding_left_chunks: -1
     force_yes: True
     device: 'cpu' # cpu or gpu:id
diff --git a/demos/streaming_asr_server/conf/ws_conformer_wenetspeech_application.yaml b/demos/streaming_asr_server/conf/ws_conformer_wenetspeech_application.yaml
index d30bcd0252e..d58c5fa35bf 100644
--- a/demos/streaming_asr_server/conf/ws_conformer_wenetspeech_application.yaml
+++ b/demos/streaming_asr_server/conf/ws_conformer_wenetspeech_application.yaml
@@ -27,7 +27,6 @@ asr_online:
     lang: 'zh'
     sample_rate: 16000
     cfg_path: 
-    decode_method: 
     force_yes: True
     device: 'cpu' # cpu or gpu:id
     decode_method: "attention_rescoring"
diff --git a/demos/streaming_asr_server/conf/ws_conformer_wenetspeech_application_faster.yaml b/demos/streaming_asr_server/conf/ws_conformer_wenetspeech_application_faster.yaml
index ba413c80238..e6e97f73602 100644
--- a/demos/streaming_asr_server/conf/ws_conformer_wenetspeech_application_faster.yaml
+++ b/demos/streaming_asr_server/conf/ws_conformer_wenetspeech_application_faster.yaml
@@ -27,7 +27,6 @@ asr_online:
     lang: 'zh'
     sample_rate: 16000
     cfg_path: 
-    decode_method: 
     force_yes: True
     device: 'cpu' # cpu or gpu:id
     decode_method: "attention_rescoring"
diff --git a/demos/streaming_asr_server/conf/ws_ds2_application.yaml b/demos/streaming_asr_server/conf/ws_ds2_application.yaml
index ac20b2a23d7..1ae3b43cd00 100644
--- a/demos/streaming_asr_server/conf/ws_ds2_application.yaml
+++ b/demos/streaming_asr_server/conf/ws_ds2_application.yaml
@@ -44,7 +44,6 @@ asr_online-onnx:
 
     chunk_buffer_conf:
         frame_duration_ms: 85
-        shift_ms: 40
         sample_rate: 16000
         sample_width: 2
         window_n: 7     # frame
@@ -75,7 +74,6 @@ asr_online-inference:
 
     chunk_buffer_conf:
         frame_duration_ms: 85
-        shift_ms: 40
         sample_rate: 16000
         sample_width: 2
         window_n: 7     # frame
diff --git a/paddlespeech/server/conf/ws_conformer_wenetspeech_application_faster.yaml b/paddlespeech/server/conf/ws_conformer_wenetspeech_application_faster.yaml
index ba413c80238..e6e97f73602 100644
--- a/paddlespeech/server/conf/ws_conformer_wenetspeech_application_faster.yaml
+++ b/paddlespeech/server/conf/ws_conformer_wenetspeech_application_faster.yaml
@@ -27,7 +27,6 @@ asr_online:
     lang: 'zh'
     sample_rate: 16000
     cfg_path: 
-    decode_method: 
     force_yes: True
     device: 'cpu' # cpu or gpu:id
     decode_method: "attention_rescoring"
diff --git a/paddlespeech/server/conf/ws_ds2_application.yaml b/paddlespeech/server/conf/ws_ds2_application.yaml
index ac20b2a23d7..1ae3b43cd00 100644
--- a/paddlespeech/server/conf/ws_ds2_application.yaml
+++ b/paddlespeech/server/conf/ws_ds2_application.yaml
@@ -44,7 +44,6 @@ asr_online-onnx:
 
     chunk_buffer_conf:
         frame_duration_ms: 85
-        shift_ms: 40
         sample_rate: 16000
         sample_width: 2
         window_n: 7     # frame
@@ -75,7 +74,6 @@ asr_online-inference:
 
     chunk_buffer_conf:
         frame_duration_ms: 85
-        shift_ms: 40
         sample_rate: 16000
         sample_width: 2
         window_n: 7     # frame