diff --git a/funasr/models/llm_asr/model.py b/funasr/models/llm_asr/model.py
index 85351b722..e1e331d56 100644
--- a/funasr/models/llm_asr/model.py
+++ b/funasr/models/llm_asr/model.py
@@ -422,7 +422,7 @@ class LLMASR2(nn.Module):
                         layer_id = int(name[beg + 1 : end - 1])
                         if layer_id < freeze_layer_num:
                             param.requires_grad = False
-                    else:
+                    elif not name.startswith("audio_encoder.ln_post"):
                         param.requires_grad = False
                 else:
                     param.requires_grad = False