diff --git a/src/CatLib.Core/Support/Stream/CombineStream.cs b/src/CatLib.Core/Support/Stream/CombineStream.cs
index fb7be4b..a0fedb9 100644
--- a/src/CatLib.Core/Support/Stream/CombineStream.cs
+++ b/src/CatLib.Core/Support/Stream/CombineStream.cs
@@ -90,7 +90,20 @@ public override long Position
         /// <summary>
         /// 是否是可读的
         /// </summary>
-        public override bool CanRead => true;
+        public override bool CanRead
+        {
+            get
+            {
+                foreach (var stream in streams)
+                {
+                    if (!stream.CanRead)
+                    {
+                        return false;
+                    }
+                }
+                return true;
+            }   
+        }
 
         /// <summary>
         /// 是否是可写的