diff --git a/DeedyDesigner/Deedy.Activity/Helpers/ActionHelper.cs b/DeedyDesigner/Deedy.Activity/Helpers/ActionHelper.cs
index 49a2477..b10e8ea 100644
--- a/DeedyDesigner/Deedy.Activity/Helpers/ActionHelper.cs
+++ b/DeedyDesigner/Deedy.Activity/Helpers/ActionHelper.cs
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
+using System.Runtime.CompilerServices;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
@@ -129,38 +130,48 @@ namespace Deedy.Activity
         /// <summary>
         /// 将使用部件声明特性声明的动作部件与主体组装到一起并连接
         /// </summary>
-        /// <param name="combined"></param>
+        /// <param name="combined">要进行组装的组合元素</param>
         public static void Help_CombineElements(this ICombinedElement combined)
         {
             if (combined == null) return;
             if (combined.Elements == null) combined.Elements = [];
             var props = combined.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.GetField | BindingFlags.SetField);
+            SortedList<int, IElement> sortedElements = new();
+            Dictionary<string, PropertyInfo> properties = new();
             foreach (var prop in props)
             {
-                if (prop.CanWrite && prop.CanRead)
-                {
-                    if (!prop.PropertyType.IsAssignableFrom(typeof(IElement))) continue;
+                if (!prop.CanRead || !prop.CanWrite) continue;
+                if (!prop.PropertyType.IsAssignableFrom(typeof(IElement))) continue;
+                var cpd = prop.GetCustomAttribute<CombinePartActionAttribute>();
+                if (cpd == null) continue;
+                var element = prop.GetValue(combined) as IElement;
+                if (element == null) continue;
 
-                    bool hasPart = false;
-                    foreach (var element in combined.Elements)
+                element.Help_SetAttachValue(CombinePartActionAttribute.CombinePartSign, prop.Name);
+                sortedElements.Add(cpd.InitialSort, element);
+                properties.Add(prop.Name, prop);
+            }
+            foreach (var partElement in sortedElements.Values)
+            {
+                string partSign = partElement.Help_GetAttachValue(CombinePartActionAttribute.CombinePartSign);
+                if (string.IsNullOrEmpty(partSign)) continue;
+                bool hasPart = false;
+                foreach (var element in combined.Elements)
+                {
+                    if (element.Help_GetAttachValue(CombinePartActionAttribute.CombinePartSign) == partSign)
                     {
-                        if (element.Help_GetAttachValue(CombinePartActionAttribute.CombinePartSign) == prop.Name)
-                        {
-                            element.LinkTo(combined);
-                            prop.SetValue(combined, element);
-                            hasPart = true;
-                            break;
-                        }
-                    }
-                    if (!hasPart)
-                    {
-                        IElement? partElement = prop.GetValue(combined) as IElement;
-                        if (partElement == null) continue;
-                        combined.Elements.Add(partElement);
-                        partElement.LinkTo(combined);
-                        partElement.Help_SetAttachValue(CombinePartActionAttribute.CombinePartSign, prop.Name);
+                        element.LinkTo(combined);
+                        properties[partSign].SetValue(combined, element);
+                        hasPart = true;
+                        break;
                     }
                 }
+                if (!hasPart)
+                {
+                    combined.Elements.Add(partElement);
+                    partElement.LinkTo(combined);
+                    if (partElement is IActionElement actionElement) actionElement.IsLocked = true;
+                }
             }
         }
         /// <summary>
diff --git a/DeedyDesigner/Deedy.Activity/IElement.cs b/DeedyDesigner/Deedy.Activity/IElement.cs
index d5bbc06..ea2c94e 100644
--- a/DeedyDesigner/Deedy.Activity/IElement.cs
+++ b/DeedyDesigner/Deedy.Activity/IElement.cs
@@ -76,8 +76,8 @@ namespace Deedy.Activity
                 combinedElement.Help_CombineElements();
 
             this.LinkTo(element);
-            if (this is IContainerElement container)
-                foreach (IElement subElement in container.Elements)
+            if (this is ICombinedElement combined)
+                foreach (IElement subElement in combined.Elements)
                     subElement.ReadyToWorking(this);
         }
         public virtual IElement? Clone()