diff --git a/src/views/run/instant/instant.data.ts b/src/views/run/instant/instant.data.ts
index 911a491..82e104d 100644
--- a/src/views/run/instant/instant.data.ts
+++ b/src/views/run/instant/instant.data.ts
@@ -193,6 +193,7 @@ export const searchFormSchema: FormSchema[] = [
     component: 'Select',
     labelWidth: 40,
     componentProps: {
+      placeholder: '全部算法',
       options: [{ value: 1, label: "主成分分析(PCA)" }, { value: 2, label: "神经网络(ANN)" }],
     },
     defaultValue: null,
diff --git a/src/views/warn/alarm/alarm.data.ts b/src/views/warn/alarm/alarm.data.ts
index a5108c1..9fc58e6 100644
--- a/src/views/warn/alarm/alarm.data.ts
+++ b/src/views/warn/alarm/alarm.data.ts
@@ -22,7 +22,6 @@ export const searchFormSchema: FormSchema[] = [
     componentProps: ({ schema, tableAction, formActionType, formModel }) => {
       return {
         // xxxx props
-        allowClear: false,
         placeholder: '全部机组',
         options: optionList.units.map(unit => ({ value: unit.id, label: unit.name })),
         onChange: async (e: any) => {
@@ -35,7 +34,7 @@ export const searchFormSchema: FormSchema[] = [
             typeId: formModel.type,
           }
           //如果typeId是空，则不设置system'Options
-          if (!param.typeId) {
+          if (!param.typeId || !param.unitId) {
             systemOptions.value = []
             return
           }
@@ -55,7 +54,6 @@ export const searchFormSchema: FormSchema[] = [
     colProps: { span: 4 },
     componentProps: ({ formModel }) => {
       return {
-        allowClear: false,
         placeholder: '全部系统',
         options: optionList.types.map(type => ({ value: type.id, label: type.name })),
         onChange: async (e: any) => {
@@ -68,7 +66,7 @@ export const searchFormSchema: FormSchema[] = [
             typeId: e,
           }
           //如果typeId是空，则不设置system'Options
-          if (!param.typeId) {
+          if (!param.typeId || !param.unitId) {
             systemOptions.value = []
             return
           }
@@ -86,7 +84,6 @@ export const searchFormSchema: FormSchema[] = [
     colProps: { span: 4 },
     componentProps: () => {
       return {
-        allowClear: false,
         placeholder: '全部子系统',
         options: systemOptions.value.map(system => ({ value: system.id, label: system.name })),
       }