diff --git a/package.json b/package.json
index 67faa63..53dfe5d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bitget-api",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "Node.js connector for Bitget REST APIs and WebSockets, with TypeScript & end-to-end tests.",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
diff --git a/src/futures-client.ts b/src/futures-client.ts
index 0560a4a..92444d0 100644
--- a/src/futures-client.ts
+++ b/src/futures-client.ts
@@ -19,6 +19,7 @@ import {
   FuturesSymbolRule,
   FuturesMarginMode,
   FuturesPosition,
+  NewFuturesPlanTrailingStopOrder,
 } from './types';
 import { REST_CLIENT_TYPE_ENUM } from './util';
 import BaseRestClient from './util/BaseRestClient';
@@ -417,6 +418,13 @@ export class FuturesClient extends BaseRestClient {
     return this.postPrivate('/api/mix/v1/plan/placeTPSL', params);
   }
 
+  /** Place Trailing Stop order */
+  submitTrailingStopOrder(
+    params: NewFuturesPlanTrailingStopOrder
+  ): Promise<APIResponse<any>> {
+    return this.postPrivate('/api/mix/v1/plan/placeTrailStop', params);
+  }
+
   /** Place Position TPSL */
   submitPositionTPSL(
     params: NewFuturesPlanPositionTPSL
diff --git a/src/types/request/futures.ts b/src/types/request/futures.ts
index 053dcb7..67dfc32 100644
--- a/src/types/request/futures.ts
+++ b/src/types/request/futures.ts
@@ -38,7 +38,9 @@ export type FuturesOrderSide =
   | 'open_long'
   | 'open_short'
   | 'close_long'
-  | 'close_short';
+  | 'close_short'
+  | 'buy_single'
+  | 'sell_single';
 
 export interface NewFuturesOrder {
   symbol: string;
@@ -100,15 +102,27 @@ export interface ModifyFuturesPlanOrderTPSL {
   presetStopLossPrice?: string;
 }
 
-export type FuturesPlanType = 'profit_plan' | 'loss_plan';
+export type FuturesPlanType = 'profit_plan' | 'loss_plan' | 'moving_plan';
 
 export interface NewFuturesPlanStopOrder {
   symbol: string;
   marginCoin: string;
   planType: FuturesPlanType;
   triggerPrice: string;
-  holdSide?: FuturesHoldSide;
+  triggerType?: 'fill_price' | 'market_price';
+  holdSide: FuturesHoldSide;
   size?: string;
+  rangeRate?: string;
+}
+
+export interface NewFuturesPlanTrailingStopOrder {
+  symbol: string;
+  marginCoin: string;
+  triggerPrice: string;
+  triggerType?: 'fill_price' | 'market_price';
+  size?: string;
+  side: FuturesOrderSide;
+  rangeRate?: string;
 }
 
 export interface NewFuturesPlanPositionTPSL {
diff --git a/test/futures/private.write.test.ts b/test/futures/private.write.test.ts
index 781c360..8301894 100644
--- a/test/futures/private.write.test.ts
+++ b/test/futures/private.write.test.ts
@@ -227,6 +227,7 @@ describe('Private Futures REST API POST Endpoints', () => {
           marginCoin,
           symbol,
           planType: 'profit_plan',
+          holdSide: 'long',
           triggerPrice: '100',
         })
       ).toMatchObject({