diff --git a/src/backend/ci/core/process/api-process/src/main/kotlin/com/tencent/devops/process/utils/PipelineVarUtil.kt b/src/backend/ci/core/process/api-process/src/main/kotlin/com/tencent/devops/process/utils/PipelineVarUtil.kt
index fc2880fc765..1b2562ba7a0 100644
--- a/src/backend/ci/core/process/api-process/src/main/kotlin/com/tencent/devops/process/utils/PipelineVarUtil.kt
+++ b/src/backend/ci/core/process/api-process/src/main/kotlin/com/tencent/devops/process/utils/PipelineVarUtil.kt
@@ -142,6 +142,13 @@ object PipelineVarUtil {
 
     private val newVarMappingOldVar = oldVarMappingNewVar.map { kv -> kv.value to kv.key }.toMap()
 
+    private val reverseContextVarMappingBuildVar =
+        contextVarMappingBuildVar.values.zip(contextVarMappingBuildVar.keys).toMap()
+
+    fun fetchReverseVarName(contextKey: String): String? {
+        return reverseContextVarMappingBuildVar[contextKey]
+    }
+
     /**
      * 填充CI预置变量
      */