diff --git a/mirai-core-api/src/commonMain/kotlin/message/data/MessageChainBuilder.kt b/mirai-core-api/src/commonMain/kotlin/message/data/MessageChainBuilder.kt
index e31c452f5..e89c31305 100644
--- a/mirai-core-api/src/commonMain/kotlin/message/data/MessageChainBuilder.kt
+++ b/mirai-core-api/src/commonMain/kotlin/message/data/MessageChainBuilder.kt
@@ -186,7 +186,9 @@ public class MessageChainBuilder private constructor(
      * 将所有已有元素引用复制到一个新的 [MessageChainBuilder]
      */
     public fun copy(): MessageChainBuilder {
-        return MessageChainBuilder(container.toMutableList())
+        return MessageChainBuilder(container.toMutableList()).also {
+            it.cache.append(this.cache)
+        }
     }
 
     public override fun remove(element: SingleMessage): Boolean {