diff --git a/lib/store/TriggerExecutor.js b/lib/store/TriggerExecutor.js
index cbd701c..33f2c06 100644
--- a/lib/store/TriggerExecutor.js
+++ b/lib/store/TriggerExecutor.js
@@ -104,6 +104,17 @@ class TriggerExecutor {
                 || trigger.action instanceof Array && !trigger.action.includes('create'), `trigger【${trigger.name}】是create类型但却带有filter`);
             (0, assert_1.default)(trigger.when === 'before' || trigger.when === 'commit', `定义了filter的trigger【${trigger.name}】的when只能是before或者commit`);
         }
+        if (Array.isArray(trigger.action)) {
+            const actions = trigger.action;
+            const seen = new Set();
+            const duplicate = actions.find(item => {
+                if (seen.has(item))
+                    return true;
+                seen.add(item);
+                return false;
+            });
+            (0, assert_1.default)(!duplicate, `注册 trigger 「${trigger.name}」 时发现定义中出现了重复定义的action: 「${duplicate}」`);
+        }
         Object.assign(this.triggerNameMap, {
             [trigger.name]: trigger,
         });
diff --git a/src/store/TriggerExecutor.ts b/src/store/TriggerExecutor.ts
index 37de691..6414eab 100644
--- a/src/store/TriggerExecutor.ts
+++ b/src/store/TriggerExecutor.ts
@@ -141,6 +141,16 @@ export class TriggerExecutor<ED extends EntityDict & BaseEntityDict, Cxt extends
                 || trigger.action instanceof Array && !(trigger.action as any[]).includes('create'), `trigger【${trigger.name}】是create类型但却带有filter`);
             assert(trigger.when === 'before' || trigger.when === 'commit', `定义了filter的trigger【${trigger.name}】的when只能是before或者commit`);
         }
+        if (Array.isArray(trigger.action)) {
+            const actions = trigger.action;
+            const seen = new Set<string>();
+            const duplicate = actions.find(item => {
+                if (seen.has(item)) return true;
+                seen.add(item);
+                return false;
+            });
+            assert(!duplicate, `注册 trigger 「${trigger.name}」 时发现定义中出现了重复定义的action: 「${duplicate}」`);
+        }
         Object.assign(this.triggerNameMap, {
             [trigger.name]: trigger,
         });