diff --git a/src/views/mtm/route_show.vue b/src/views/mtm/route_show.vue
index 56d40d22..4c537ece 100644
--- a/src/views/mtm/route_show.vue
+++ b/src/views/mtm/route_show.vue
@@ -288,6 +288,7 @@ export default {
 .rs-tabs {
 	/* el-tabs 的空 content 默认会 flex-grow，多个流程图时会把下方画布挤出可视区 */
 	flex: 0 0 auto;
+	height: auto;
 }
 .rs-tabs :deep(.el-tabs__header) {
 	margin: 0 0 8px;