diff --git a/interfaces/ets/ani/hisysevent/ets/@ohos.hiSysEvent.ets b/interfaces/ets/ani/hisysevent/ets/@ohos.hiSysEvent.ets
index 77099b0235285c2ecba7219bb1f41b928cb04ee5..09f0304dcf3763ceb0a50a7d693e0269e473a155 100644
--- a/interfaces/ets/ani/hisysevent/ets/@ohos.hiSysEvent.ets
+++ b/interfaces/ets/ani/hisysevent/ets/@ohos.hiSysEvent.ets
@@ -19,7 +19,7 @@ class SysEventInfoAni implements hiSysEvent.SysEventInfo {
     domain: string = "";
     name: string = "";
     eventType: hiSysEvent.EventType = hiSysEvent.EventType.FAULT;
-    params?: Record<string, boolean | int | double | string | bigint | boolean[] | int[] | double[] | string[] | bigint[]>;
+    params?: Record<string, boolean | int | double | string | bigint | boolean[] | int[] | double[] | string[] | bigint[]> | null | undefined;
 }
 
 class WatcherAni implements hiSysEvent.Watcher {
@@ -37,14 +37,14 @@ class QueryArgAni implements hiSysEvent.QueryArg {
     beginTime: long = 0;
     endTime: long = 0;
     maxEvents: long = 0;
-    fromSeq?: long | undefined;
-    toSeq?: long | undefined;
+    fromSeq?: long | null | undefined;
+    toSeq?: long | null | undefined;
 }
 
 class QueryRuleAni implements hiSysEvent.QueryRule {
     domain: string = "";
     names: string[] = [];
-    condition?: string | undefined;
+    condition?: string | null | undefined;
 }
 
 interface Result {
@@ -70,7 +70,7 @@ export default namespace hiSysEvent {
         domain: string;
         name: string;
         eventType: EventType;
-        params?: Record<string, boolean | int | double | string | bigint | boolean[] | int[] | double[] | string[] | bigint[]>;
+        params?: Record<string, boolean | int | double | string | bigint | boolean[] | int[] | double[] | string[] | bigint[]> | null | undefined;
      }
 
     export interface Watcher {
@@ -82,7 +82,7 @@ export default namespace hiSysEvent {
     export interface WatchRule {
         domain: string;
         name: string;
-        tag?: string;
+        tag?: string | null | undefined;
         ruleType: RuleType;
     }
 
@@ -95,15 +95,15 @@ export default namespace hiSysEvent {
     export interface QueryRule {
       domain: string;
       names: string[];
-      condition?: string;
+      condition?: string | null | undefined;
     }
 
     export interface QueryArg {
         beginTime: long;
         endTime: long;
         maxEvents: long;
-        fromSeq?: long;
-        toSeq?: long;
+        fromSeq?: long | null | undefined;
+        toSeq?: long | null | undefined;
     }
 
     export interface Querier {