diff --git a/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/plugin/common/StandardMessageCodec.ets b/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/plugin/common/StandardMessageCodec.ets
index 8650cfe643a400cfba7dd4b99b505f151fa82bd7..0ef49f9715e01e8c56d503570e82abbbbfbb1d4a 100644
--- a/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/plugin/common/StandardMessageCodec.ets
+++ b/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/plugin/common/StandardMessageCodec.ets
@@ -102,18 +102,25 @@ export default class StandardMessageCodec implements MessageCodec<ESObject> {
             stream.writeInt8(value ? StandardMessageCodec.TRUE : StandardMessageCodec.FALSE)
         } else if (typeof value === "number") {
             if (Number.isInteger(value)) { //整型
-                if (-0x7fffffff - 1 <= value && value <= 0x7fffffff) {
+                if (-0x7fffffff - 1 <= value && value <= 0x7fffffff) { //int32
                     stream.writeInt8(StandardMessageCodec.INT32)
                     stream.writeInt32(value, true)
-                } else {
+                } else if(-0x7fffffffffffffff - 1 <= value && value <= 0x7fffffffffffffff) { //int64
                     stream.writeInt8(StandardMessageCodec.INT64)
-                    stream.writeInt64(value, true)
+                    stream.writeBigInt64(BigInt(value), true)
+                } else { //被判为整型的double型
+                    stream.writeInt8(StandardMessageCodec.FLOAT64)
+                    this.writeAlignment(stream, 8);
+                    stream.writeFloat64(value, true)
                 }
             } else { //浮点型
                 stream.writeInt8(StandardMessageCodec.FLOAT64)
                 this.writeAlignment(stream, 8);
                 stream.writeFloat64(value, true)
             }
+        }else if (typeof value === "bigint") {
+            stream.writeInt8(StandardMessageCodec.INT64)
+            stream.writeBigInt64(value, true)
         } else if (typeof value === "string") {
             stream.writeInt8(StandardMessageCodec.STRING)
             let stringBuff = StringUtils.stringToArrayBuffer(value)
@@ -126,6 +133,11 @@ export default class StandardMessageCodec implements MessageCodec<ESObject> {
             this.writeSize(stream, value.length);
             this.writeAlignment(stream, 4);
             value.forEach(item => stream.writeInt32(item, true))
+        } else if(value instanceof BigInt64Array) {
+            stream.writeInt8(StandardMessageCodec.INT64_ARRAY)
+            this.writeSize(stream, value.length);
+            this.writeAlignment(stream, 8);
+            value.forEach(item => stream.writeBigInt64(item, true))
         } else if (value instanceof Float32Array) {
             stream.writeInt8(StandardMessageCodec.FLOAT32_ARRAY)
             this.writeSize(stream, value.length);
@@ -231,6 +243,7 @@ export default class StandardMessageCodec implements MessageCodec<ESObject> {
                 break;
             case StandardMessageCodec.BIGINT:
                 result = buffer.readBigInt64(true)
+                break;
             case StandardMessageCodec.FLOAT64:
                 this.readAlignment(buffer, 8);
                 result = buffer.readFloat64(true)
@@ -254,12 +267,12 @@ export default class StandardMessageCodec implements MessageCodec<ESObject> {
                 result = array;
                 break;
             }
-            case StandardMessageCodec.INT64_ARRAY: { //这里是都城array 还是 bigint待定
+            case StandardMessageCodec.INT64_ARRAY: {
                 let length = this.readSize(buffer);
-                let array: Array<ESObject> = new Array(length)
+                let array = new BigInt64Array(length)
                 this.readAlignment(buffer, 8);
                 for (let i = 0; i < length; i++) {
-                    array[i] = buffer.readInt64(true)
+                    array[i] = buffer.readBigInt64(true)
                 }
                 result = array;
                 break;
diff --git a/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/util/ByteBuffer.ets b/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/util/ByteBuffer.ets
index 6e0837f5de981501166a2f78067c37402a37bd3c..38d652b9368dd9c81dc8d6bb419e207785cc44eb 100644
--- a/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/util/ByteBuffer.ets
+++ b/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/util/ByteBuffer.ets
@@ -573,8 +573,8 @@ export class ByteBuffer {
    * @param littleEndian If the value is little endian.
    * @returns The value.
    */
-  getInt64(byteOffset: number, littleEndian?: boolean): number {
-    return Number(this.getBigInt64(byteOffset, littleEndian))
+  getInt64(byteOffset: number, littleEndian?: boolean): bigint {
+    return this.getBigInt64(byteOffset, littleEndian)
   }
 
   /**
@@ -582,7 +582,7 @@ export class ByteBuffer {
    * @param littleEndian If the value is little endian.
    * @returns The value.
    */
-  readInt64(littleEndian?: boolean): number {
+  readInt64(littleEndian?: boolean): bigint {
     const value = this.getInt64(this.mByteOffset, littleEndian)
     this.mByteOffset += 8
     return value