diff --git a/src/views/perfManage/customTarget/index.vue b/src/views/perfManage/customTarget/index.vue
index 3da08739..f407a8ed 100644
--- a/src/views/perfManage/customTarget/index.vue
+++ b/src/views/perfManage/customTarget/index.vue
@@ -647,7 +647,11 @@ onMounted(() => {
               name="title"
               v-bind="modalStateFrom.validateInfos.title"
             >
-              <a-input v-model:value="modalState.from.title" allow-clear>
+              <a-input
+                v-model:value="modalState.from.title"
+                :maxlength="255"
+                allow-clear
+              >
               </a-input>
             </a-form-item>
           </a-col>
@@ -657,7 +661,11 @@ onMounted(() => {
               name="kpiId"
               v-bind="modalStateFrom.validateInfos.kpiId"
             >
-              <a-input v-model:value="modalState.from.kpiId" allow-clear>
+              <a-input
+                v-model:value="modalState.from.kpiId"
+                :maxlength="16"
+                allow-clear
+              >
               </a-input>
             </a-form-item>
           </a-col>
@@ -669,7 +677,11 @@ onMounted(() => {
           :label-col="{ span: 3 }"
           v-bind="modalStateFrom.validateInfos.expression"
         >
-          <a-input v-model:value="modalState.from.expression" allow-clear>
+          <a-input
+            v-model:value="modalState.from.expression"
+            :maxlength="1024"
+            allow-clear
+          >
           </a-input>
         </a-form-item>