diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d0b69bfa8b72975a7711438df0f5e20416a9961..124e849985968e5295543115d8d9f6c725f8ab7c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,9 @@
 并且此项目遵循 [Semantic Versioning](https://semver.org/lang/zh-CN/).
 
 ## [Unreleased]
+### Fixed
 
+- 修复UI界面域获取异常
 ## [0.7.8] - 2024-04-30
 
 ### Added
diff --git a/src/view-engine/edit-view.engine.ts b/src/view-engine/edit-view.engine.ts
index 17b6154021fe02b6b87cc9923cb297f188604a7d..0a976282217b62b22b98d57983b3fd572c572203 100644
--- a/src/view-engine/edit-view.engine.ts
+++ b/src/view-engine/edit-view.engine.ts
@@ -100,7 +100,7 @@ export class EditViewEngine extends ViewEngineBase {
     modal.hooks.shouldDismiss.tapPromise(async context => {
       const uiDomain = ibiz.uiDomainManager.get(this.view.context.srfsessionid);
       const isChange =
-        (this.form.state.modified || uiDomain.dataModification) &&
+        (this.form.state.modified || uiDomain?.dataModification) &&
         this.view.model.enableDirtyChecking === true;
       if (isChange && context.allowClose == null) {
         const isAllow = await ibiz.confirm.error({
diff --git a/src/view-engine/opt-view.engine.ts b/src/view-engine/opt-view.engine.ts
index adb7e51888fc629713944e207d0dead47c11dc5f..9188bd45caa6d24acb7cf61ac283070d5fc123c2 100644
--- a/src/view-engine/opt-view.engine.ts
+++ b/src/view-engine/opt-view.engine.ts
@@ -60,7 +60,7 @@ export class OptViewEngine extends ViewEngineBase {
     modal.hooks.shouldDismiss.tapPromise(async context => {
       const uiDomain = ibiz.uiDomainManager.get(this.view.context.srfsessionid);
       const isChange =
-        (this.form.state.modified || uiDomain.dataModification) &&
+        (this.form.state.modified || uiDomain?.dataModification) &&
         this.view.model.enableDirtyChecking === true;
       if (isChange && context.allowClose == null) {
         const isAllow = await ibiz.confirm.error({