diff --git a/schema/prompt.py b/schema/prompt.py
index a6143e3..a2d9122 100644
--- a/schema/prompt.py
+++ b/schema/prompt.py
@@ -1,6 +1,7 @@
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, field_validator
 from typing import Optional
 from datetime import datetime, timezone
+from langchain.prompts import PromptTemplate
 
 class promptTempleta(BaseModel):
     id: Optional[int] = Field(default=None, description="模板ID")
@@ -10,4 +11,10 @@ class promptTempleta(BaseModel):
     created_at: str = Field(
         default_factory=lambda: datetime.now(timezone.utc).isoformat(),
         description="记录创建时间"
-    )
\ No newline at end of file
+    )
+
+    @field_validator('content')
+    def validate_content(cls, value):
+        if not "document_slice" in PromptTemplate.from_template(value).input_variables:
+            raise ValueError("模板变量缺少 document_slice")
+        return value
\ No newline at end of file