diff --git a/src/common/detail.js b/src/common/detail.js
index da93b326..ac1b3ed2 100644
--- a/src/common/detail.js
+++ b/src/common/detail.js
@@ -152,7 +152,9 @@ export function calcTreeHandleQty(detailSource) {
 						}
 					}
 				}
-				item.handleQty = calc.add(item.handleQty, detail.handleQty);
+				if(detail.handleQty){
+					item.handleQty = calc.add(item.handleQty, detail.handleQty);
+				}
 			}
 		}
 	}