diff --git a/ruoyi-fastapi-backend/module_admin/service/kb_es_service.py b/ruoyi-fastapi-backend/module_admin/service/kb_es_service.py
index d0ccc30..dd46fcb 100644
--- a/ruoyi-fastapi-backend/module_admin/service/kb_es_service.py
+++ b/ruoyi-fastapi-backend/module_admin/service/kb_es_service.py
@@ -42,8 +42,11 @@ class KBESService:
         if not question:
             return [], KBRetrievalMetrics(0.0, 0.0, 0.0, 0, 0.0, False)
 
+        # 仅对 KB_PROVIDER=es_bm25：禁用 KBES 检索缓存（避免 curl/API 不一致与历史命中）
+        enable_retrieval_cache = KBConfig.KB_PROVIDER != 'es_bm25'
+
         cache_hit = False
-        if redis and KBConfig.KB_CACHE_TTL > 0:
+        if enable_retrieval_cache and redis and KBConfig.KB_CACHE_TTL > 0:
             key = cls._cache_key(question)
             cached = await redis.get(key)
             if cached:
@@ -91,7 +94,7 @@ class KBESService:
             cache_hit=cache_hit,
         )
 
-        if redis and KBConfig.KB_CACHE_TTL > 0:
+        if enable_retrieval_cache and redis and KBConfig.KB_CACHE_TTL > 0:
             try:
                 key = cls._cache_key(question)
                 await redis.set(