diff --git a/internal/nodes/http_request_cache.go b/internal/nodes/http_request_cache.go
index f850a35..03e8c26 100644
--- a/internal/nodes/http_request_cache.go
+++ b/internal/nodes/http_request_cache.go
@@ -104,6 +104,7 @@ func (this *HTTPRequest) doCacheRead() (shouldStop bool) {
 	}
 
 	this.cacheKey = key
+	this.varMapping["cache.key"] = key
 
 	// 读取缓存
 	storage := caches.SharedManager.FindStorageWithPolicy(cachePolicy.Id)