diff --git a/src/views/warn/alarm/alarm.data.ts b/src/views/warn/alarm/alarm.data.ts
index c422f8b..cc6c8f6 100644
--- a/src/views/warn/alarm/alarm.data.ts
+++ b/src/views/warn/alarm/alarm.data.ts
@@ -14,14 +14,16 @@ export const searchFormSchema: FormSchema[] = [
     label: '机组',
     field: 'unit',
     component: 'Select',
-    defaultValue: optionList.units[0].id || null,
-    colProps: { span: 5 },
+    // defaultValue: optionList.units[0].id || null,
+    defaultValue: null,
+
+    colProps: { span: 4 },
 
     componentProps: ({ schema, tableAction, formActionType, formModel }) => {
       return {
         // xxxx props
         allowClear: false,
-        placeholder: '请选择机组',
+        placeholder: '全部机组',
         options: optionList.units.map(unit => ({ value: unit.id, label: unit.name })),
         onChange: async (e: any) => {
           // const { reload } = tableAction
@@ -32,8 +34,13 @@ export const searchFormSchema: FormSchema[] = [
             unitId: e,
             typeId: formModel.type,
           }
+          //如果typeId是空，则不设置system'Options
+          if (!param.typeId) {
+            systemOptions.value = []
+            return
+          }
           systemOptions.value = await subSystemListApi(param)
-          formModel.system = systemOptions.value[0].id
+          // formModel.system = systemOptions.value[0].id
         },
       }
     },
@@ -42,12 +49,14 @@ export const searchFormSchema: FormSchema[] = [
     label: '系统',
     field: 'type',
     component: 'Select',
-    defaultValue: optionList.types[0].id || null,
-    colProps: { span: 5 },
+    // defaultValue: optionList.types[0].id || null,
+    defaultValue:  null,
+
+    colProps: { span: 4 },
     componentProps: ({ formModel }) => {
       return {
         allowClear: false,
-        placeholder: '请选择系统',
+        placeholder: '全部系统',
         options: optionList.types.map(type => ({ value: type.id, label: type.name })),
         onChange: async (e: any) => {
           // const { reload } = tableAction
@@ -58,6 +67,11 @@ export const searchFormSchema: FormSchema[] = [
             unitId: formModel.unit,
             typeId: e,
           }
+          //如果typeId是空，则不设置system'Options
+          if (!param.typeId) {
+            systemOptions.value = []
+            return
+          }
           systemOptions.value = await subSystemListApi(param)
         },
       }
@@ -67,12 +81,13 @@ export const searchFormSchema: FormSchema[] = [
     label: '子系统',
     field: 'system',
     component: 'Select',
-    defaultValue: systemOptions.value[0].id || null,
-    colProps: { span: 5 },
+    // defaultValue: systemOptions.value[0].id || null,
+    defaultValue:  null,
+    colProps: { span: 4 },
     componentProps: () => {
       return {
         allowClear: false,
-        placeholder: '请选择子系统',
+        placeholder: '全部子系统',
         options: systemOptions.value.map(system => ({ value: system.id, label: system.name })),
       }
     },
@@ -82,10 +97,11 @@ export const searchFormSchema: FormSchema[] = [
     label: '模型实例名称',
     field: 'mpName',
     component: 'Input',
-    labelWidth: 120,
+    labelWidth: 100,
+
     defaultValue: '',
-    colProps: { span: 6 },
-  }
+    colProps: { span: 5 },
+  },
 ]
 
 export const columns: BasicColumn[] = [
diff --git a/src/views/warn/alarm/index.vue b/src/views/warn/alarm/index.vue
index 2015c22..13791e8 100644
--- a/src/views/warn/alarm/index.vue
+++ b/src/views/warn/alarm/index.vue
@@ -79,8 +79,8 @@ async function handleTrend(record: Recordable) {
 
 }
 onMounted(async () => {
-  const { setFieldsValue } = getForm()
-  await setFieldsValue({ system: null })
+  // const { setFieldsValue } = getForm()
+  // await setFieldsValue({ system: null })
 })
 </script>