diff --git a/egs/aishell/branchformer/README.md b/egs/aishell/branchformer/README.md
deleted file mode 100644
index a67b183ed..000000000
--- a/egs/aishell/branchformer/README.md
+++ /dev/null
@@ -1,17 +0,0 @@
-
-# Conformer Result
-
-## Training Config
-- Feature info: using 80 dims fbank, global cmvn, speed perturb(0.9, 1.0, 1.1), specaugment
-- Train info: lr 5e-4, batch_size 25000, 2 gpu(Tesla V100), acc_grad 1, 50 epochs
-- Train config: conf/train_asr_transformer.yaml
-- LM config: LM was not used
-- Model size: 46M
-
-## Results (CER)
-- Decode config: conf/decode_asr_transformer.yaml (ctc weight:0.5)
-
-|   testset   | CER(%)  |
-|:-----------:|:-------:|
-|     dev     |  4.42   |
-|    test     |  4.87   |
\ No newline at end of file
diff --git a/egs/aishell/branchformer/conf/train_asr_branchformer.yaml b/egs/aishell/branchformer/conf/train_asr_branchformer.yaml
index a5f8704b1..b01fd5b07 100644
--- a/egs/aishell/branchformer/conf/train_asr_branchformer.yaml
+++ b/egs/aishell/branchformer/conf/train_asr_branchformer.yaml
@@ -97,7 +97,7 @@ dataset_conf:
         sort_size: 500
     batch_conf:
         batch_type: token
-        batch_size: 25000
+        batch_size: 20000
     num_workers: 8
 
 log_interval: 50