diff --git a/interop/src/cangjie/InteropTypes.cj b/interop/src/cangjie/InteropTypes.cj
index 1be75c02185af98b576de76e849257969a471168..993c8346eca71158524b8321f11f2583ed68ddc4 100644
--- a/interop/src/cangjie/InteropTypes.cj
+++ b/interop/src/cangjie/InteropTypes.cj
@@ -21,4 +21,15 @@ public type KFloat = Float32
 public type pointer = KPointer
 public type KInt = Int32
 public type KStringPtr = String
-public type ArrayBuffer = ArrayList<UInt8>
\ No newline at end of file
+public type ArrayBuffer = ArrayList<UInt8>
+@C
+public struct KInteropReturnBuffer {
+  public var length: Int32
+  public var data: CPointer<UInt8>
+  public var dispose: CPointer<CFunc<(CPointer<Unit>, Int32) -> Unit>>
+  init (length: Int32, data: CPointer<UInt8>, dispose: CPointer<CFunc<(CPointer<Unit>, Int32) -> Unit>>) {
+    this.length = length
+    this.data = data
+    this.dispose = dispose
+  }
+}
\ No newline at end of file