diff --git a/Apewer/CollectionUtility.cs b/Apewer/CollectionUtility.cs
index 2d6c59d..7ad3b93 100644
--- a/Apewer/CollectionUtility.cs
+++ b/Apewer/CollectionUtility.cs
@@ -952,6 +952,30 @@ namespace Apewer
 
         #endregion
 
+        #region Join
+
+        /// <summary>连接多个集合的元素为单个集合。</summary>
+        public static T[] Join<T>(params IEnumerable<T>[] collections)
+        {
+            if (collections == null) return new T[0];
+
+            var count = collections.Length;
+            if (count < 1) return new T[0];
+
+            var result = new List<T>();
+            foreach (var collection in collections)
+            {
+                if (collection == null) continue;
+                foreach (var item in collection)
+                {
+                    result.Add(item);
+                }
+            }
+            return result.ToArray();
+        }
+
+        #endregion
+
     }
 
 }