diff --git a/backend/internal/repository/account_repo.go b/backend/internal/repository/account_repo.go
index 5d7ff70d..525abf65 100644
--- a/backend/internal/repository/account_repo.go
+++ b/backend/internal/repository/account_repo.go
@@ -454,6 +454,7 @@ func (r *accountRepository) Delete(ctx context.Context, id int64) error {
 			return err
 		}
 	}
+	r.deleteSchedulerAccountSnapshot(ctx, id)
 	if err := enqueueSchedulerOutbox(ctx, r.sql, service.SchedulerOutboxEventAccountChanged, &id, nil, buildSchedulerGroupPayload(groupIDs)); err != nil {
 		logger.LegacyPrintf("repository.account", "[SchedulerOutbox] enqueue account delete failed: account=%d err=%v", id, err)
 	}
@@ -754,6 +755,15 @@ func (r *accountRepository) syncSchedulerAccountSnapshot(ctx context.Context, ac
 	}
 }
 
+func (r *accountRepository) deleteSchedulerAccountSnapshot(ctx context.Context, accountID int64) {
+	if r == nil || r.schedulerCache == nil || accountID <= 0 {
+		return
+	}
+	if err := r.schedulerCache.DeleteAccount(ctx, accountID); err != nil {
+		logger.LegacyPrintf("repository.account", "[Scheduler] delete account snapshot failed: id=%d err=%v", accountID, err)
+	}
+}
+
 func (r *accountRepository) syncSchedulerAccountSnapshots(ctx context.Context, accountIDs []int64) {
 	if r == nil || r.schedulerCache == nil || len(accountIDs) == 0 {
 		return
diff --git a/backend/internal/repository/account_repo_integration_test.go b/backend/internal/repository/account_repo_integration_test.go
index 87ed49ca..9e15047c 100644
--- a/backend/internal/repository/account_repo_integration_test.go
+++ b/backend/internal/repository/account_repo_integration_test.go
@@ -23,6 +23,7 @@ type AccountRepoSuite struct {
 
 type schedulerCacheRecorder struct {
 	setAccounts []*service.Account
+	deleteIDs   []int64
 	accounts    map[int64]*service.Account
 }
 
@@ -53,6 +54,10 @@ func (s *schedulerCacheRecorder) SetAccount(ctx context.Context, account *servic
 }
 
 func (s *schedulerCacheRecorder) DeleteAccount(ctx context.Context, accountID int64) error {
+	s.deleteIDs = append(s.deleteIDs, accountID)
+	if s.accounts != nil {
+		delete(s.accounts, accountID)
+	}
 	return nil
 }
 
@@ -185,6 +190,27 @@ func (s *AccountRepoSuite) TestDelete() {
 	s.Require().Error(err, "expected error after delete")
 }
 
+func (s *AccountRepoSuite) TestDelete_RemovesSchedulerAccountSnapshot() {
+	account := mustCreateAccount(s.T(), s.client, &service.Account{Name: "to-delete-cache"})
+	cacheRecorder := &schedulerCacheRecorder{
+		accounts: map[int64]*service.Account{
+			account.ID: {
+				ID:          account.ID,
+				Name:        account.Name,
+				Status:      service.StatusActive,
+				Schedulable: true,
+			},
+		},
+	}
+	s.repo.schedulerCache = cacheRecorder
+
+	err := s.repo.Delete(s.ctx, account.ID)
+	s.Require().NoError(err, "Delete")
+
+	s.Require().Equal([]int64{account.ID}, cacheRecorder.deleteIDs)
+	s.Require().NotContains(cacheRecorder.accounts, account.ID)
+}
+
 func (s *AccountRepoSuite) TestDelete_WithGroupBindings() {
 	group := mustCreateGroup(s.T(), s.client, &service.Group{Name: "g-del"})
 	account := mustCreateAccount(s.T(), s.client, &service.Account{Name: "acc-del"})