diff --git a/swift/llm/template/template/utils.py b/swift/llm/template/template/utils.py
index fab39510ff..bb1072901f 100644
--- a/swift/llm/template/template/utils.py
+++ b/swift/llm/template/template/utils.py
@@ -15,7 +15,7 @@ class ChatmlTemplateMeta(TemplateMeta):
     prefix: Prompt = field(default_factory=list)
     prompt: Prompt = field(default_factory=lambda: ['<|im_start|>user\n{{QUERY}}<|im_end|>\n<|im_start|>assistant\n'])
     chat_sep: Optional[Prompt] = field(default_factory=lambda: ['<|im_end|>\n'])
-    suffix: Prompt = field(default_factory=lambda: ['<|im_end|>'])
+    suffix: Prompt = field(default_factory=lambda: ['<|im_end|>\n'])
     system_prefix: Optional[Prompt] = field(default_factory=lambda: ['<|im_start|>system\n{{SYSTEM}}<|im_end|>\n'])
     auto_add_bos: bool = True