diff --git a/backend/internal/handler/ticket.go b/backend/internal/handler/ticket.go
index 8a2fddc..bae87a2 100644
--- a/backend/internal/handler/ticket.go
+++ b/backend/internal/handler/ticket.go
@@ -427,12 +427,13 @@ func ApproveTicket(c *gin.Context) {
 	if input.Action == "reject" {
 		newStatus = "rejected"
 	} else if input.Action == "approve" {
-		// Check if there are more pending approvals
-		var pendingCount int64
-		model.DB.Model(&model.TicketApproval{}).Where("ticket_id = ? AND action IS NULL", id).Count(&pendingCount)
-		if pendingCount > 0 {
+		// Check if there are more pending AUDIT approvals (exclude execute type)
+		var pendingAuditCount int64
+		model.DB.Model(&model.TicketApproval{}).Where("ticket_id = ? AND action IS NULL AND step_type != 'execute'", id).Count(&pendingAuditCount)
+		if pendingAuditCount > 0 {
 			newStatus = "reviewing"
 		}
+		// If all audit steps done → "approved" (ready for execution)
 	}
 	
 	ticket.Status = &newStatus
@@ -603,25 +604,36 @@ func ExecuteTicket(c *gin.Context) {
 			execTimeout := getSettingInt("executor_timeout", 300)
 			ctx, cancel := context.WithTimeout(context.Background(), time.Duration(execTimeout)*time.Second)
 			defer cancel()
-			// Dry-run: EXPLAIN pre-check
+			// Dry-run: EXPLAIN pre-check (skip DDL statements)
 			if getSetting("executor_dry_run", "true") == "true" {
+				ddlPrefixes := []string{"CREATE", "ALTER", "DROP", "TRUNCATE", "RENAME"}
 				statements := splitSQL(ticket.SQLContent)
 				for _, stmt := range statements {
 					stmt = strings.TrimSpace(stmt)
-					if stmt == "" || strings.HasPrefix(strings.ToUpper(stmt), "EXPLAIN") {
+					if stmt == "" {
+						continue
+					}
+					upperStmt := strings.ToUpper(stmt)
+					if strings.HasPrefix(upperStmt, "EXPLAIN") {
+						continue
+					}
+					// Skip DDL — EXPLAIN does not work on DDL statements
+					isDDL := false
+					for _, prefix := range ddlPrefixes {
+						if strings.HasPrefix(upperStmt, prefix) {
+							isDDL = true
+							break
+						}
+					}
+					if isDDL {
 						continue
 					}
-					var explainRows []string
 					rows, err := db.QueryContext(ctx, "EXPLAIN "+stmt)
 					if err != nil {
 						execErr = fmt.Sprintf("预检查失败(EXPLAIN): %v", err)
 						break
 					}
-					for rows.Next() {
-						rows.Close()
-						break
-					}
-					_ = explainRows
+					rows.Close()
 				}
 				if execErr != "" {
 					failStatus := "failed"
@@ -753,8 +765,8 @@ func CancelTicket(c *gin.Context) {
 		}
 	}
 	
-	if ticket.Status != nil && (*ticket.Status != "pending" && *ticket.Status != "reviewing") {
-		c.JSON(http.StatusBadRequest, gin.H{"detail": "Can only cancel pending or reviewing tickets"})
+	if ticket.Status != nil && (*ticket.Status != "pending" && *ticket.Status != "reviewing" && *ticket.Status != "approved") {
+		c.JSON(http.StatusBadRequest, gin.H{"detail": "只能撤销待审核、审核中或已通过（待执行）的工单"})
 		return
 	}
 	
diff --git a/frontend/src/constants/menu.ts b/frontend/src/constants/menu.ts
index da1ab7c..588bd34 100644
--- a/frontend/src/constants/menu.ts
+++ b/frontend/src/constants/menu.ts
@@ -12,12 +12,12 @@ export const menuItems = [
 
   // 管理 — 数据源 + 权限
   { id: 'instances', label: '数据源', icon: 'Database', section: 'admin', roles: ['admin', 'dba'], permission: 'instances.manage' },
+  { id: 'workflow', label: '审批流程', icon: 'GitBranch', section: 'admin', roles: ['admin', 'dba'], permission: 'workflow.manage' },
   { id: 'users', label: '用户管理', icon: 'Users', section: 'admin', roles: ['admin'], permission: 'users.manage' },
   { id: 'roles', label: '角色权限', icon: 'ShieldCheck', section: 'admin', roles: ['admin'], permission: 'roles.manage' },
   { id: 'instance-groups', label: '权限组', icon: 'FolderLock', section: 'admin', roles: ['admin'], permission: 'instance-groups.manage' },
 
   // 系统
-  { id: 'workflow', label: '审批流程', icon: 'GitBranch', section: 'system', roles: ['admin', 'dba', 'developer', 'auditor'], permission: 'workflow.manage' },
   { id: 'audit-logs', label: '审计日志', icon: 'ScrollText', section: 'system', roles: ['admin', 'dba', 'auditor'], permission: 'audit-logs.view' },
   { id: 'auto-task', label: '自动任务', icon: 'Timer', section: 'system', roles: ['admin'], permission: 'auto-task.manage' },
   { id: 'settings', label: '系统设置', icon: 'Settings', section: 'system', roles: ['admin'], permission: 'settings.manage' },
diff --git a/frontend/src/pages/TicketDetailPage.tsx b/frontend/src/pages/TicketDetailPage.tsx
index 2423fe1..9076018 100644
--- a/frontend/src/pages/TicketDetailPage.tsx
+++ b/frontend/src/pages/TicketDetailPage.tsx
@@ -232,7 +232,7 @@ export default function TicketDetailPage() {
       canApprove: canApproveRole && (ticket.status === 'pending' || ticket.status === 'reviewing'),
       canExecute: adminOrDba && ticket.status === 'approved',
       canRollback: adminOrDba && (ticket.status === 'success' || ticket.status === 'failed'),
-      canCancel: applicant && (ticket.status === 'pending' || ticket.status === 'reviewing'),
+      canCancel: applicant && (ticket.status === 'pending' || ticket.status === 'reviewing' || ticket.status === 'approved'),
     };
   }, [ticket, auth.user.role, auth.user.id]);
 
diff --git a/frontend/src/pages/TicketsPage.tsx b/frontend/src/pages/TicketsPage.tsx
index 3dbad4d..e57cd95 100644
--- a/frontend/src/pages/TicketsPage.tsx
+++ b/frontend/src/pages/TicketsPage.tsx
@@ -490,7 +490,7 @@ export default function TicketsPage() {
                             </button>
                           )}
 
-                          {(ticket.status === 'pending' || ticket.status === 'reviewing') && (
+                          {(ticket.status === 'pending' || ticket.status === 'reviewing' || ticket.status === 'approved') && (
                             <button
                               onClick={async () => {
                                 try {
diff --git a/frontend/src/pages/WorkflowPage.tsx b/frontend/src/pages/WorkflowPage.tsx
index ffd39bd..b85cb0a 100644
--- a/frontend/src/pages/WorkflowPage.tsx
+++ b/frontend/src/pages/WorkflowPage.tsx
@@ -282,7 +282,7 @@ function WorkflowEditorModal({ workflow, users, onClose, onSaved }: EditorProps)
 
   const getEligibleUsers = (stepType: string) => {
     const active = users.filter(u => u.is_active);
-    if (stepType === 'audit') return active.filter(u => ['admin', 'superadmin', 'dba', 'auditor'].includes(u.role));
+    if (stepType === 'audit') return active.filter(u => ['admin', 'superadmin', 'dba', 'developer', 'auditor'].includes(u.role));
     if (stepType === 'execute') return active.filter(u => ['admin', 'superadmin', 'dba'].includes(u.role));
     return active;
   };