diff --git a/README.md b/README.md
index 9f4de69..e70354f 100644
--- a/README.md
+++ b/README.md
@@ -125,7 +125,10 @@ Following examples will use the `await` form, which requires some configuration
   - [marginIsolatedTransfer](#marginIsolatedTransfer)
   - [marginIsolatedTransferHistory](#marginIsolatedTransferHistory)
   - [marginOrder](#marginOrder)
+  - [marginCancelOrder](#marginCancelOrder)
   - [marginOrderOco](#marginOrderOco)
+  - [marginOpenOrders](#marginOpenOrders)
+  - [marginCancelOpenOrders](#marginCancelOpenOrders)
   - [marginGetOrder](#marginGetOrder)
   - [marginGetOrderOco](#marginGetOrderOco)
   - [disableMarginAccount](#disableMarginAccount)
@@ -3194,6 +3197,49 @@ console.log(await client.marginOrder({
 
 </details>
 
+#### marginCancelOrder
+
+Cancels an active margin order.
+
+```js
+console.log(
+  await client.marginCancelOrder({
+    symbol: 'ETHBTC',
+    orderId: 1,
+  }),
+)
+```
+
+| Param             | Type   | Required | Description                                                                |
+| ----------------- | ------ | -------- | -------------------------------------------------------------------------- |
+| symbol            | String | true     |
+| orderId           | Number | true     | Not required if `origClientOrderId` is used                                |
+| origClientOrderId | String | false    |
+| newClientOrderId  | String | false    | Used to uniquely identify this cancel. Automatically generated by default. |
+| recvWindow        | Number | false    |
+
+<details>
+<summary>Output</summary>
+
+```js
+{
+  symbol: "LTCBTC",
+  orderId: 28,
+  origClientOrderId: "myOrder1",
+  clientOrderId: "cancelMyOrder1",
+  price: "1.00000000",
+  origQty: "10.00000000",
+  executedQty: "8.00000000",
+  cummulativeQuoteQty: "8.00000000",
+  status: "CANCELED",
+  timeInForce: "GTC",
+  type: "LIMIT",
+  side: "SELL"
+}
+```
+
+</details>
+
 #### marginOrderOco
 
 ```js
@@ -3286,6 +3332,95 @@ console.log(await client.marginOrderOco({
 
 </details>
 
+#### marginOpenOrders
+
+Query Margin Account's Open Orders
+
+```js
+console.log(
+  await client.marginOpenOrders({
+    symbol: 'XLMBTC',
+  }),
+)
+```
+
+| Param      | Type   | Required |
+| ---------- | ------ | -------- |
+| symbol     | String | false    |
+| isIsolated | String | false    |
+| recvWindow | Number | false    |
+
+<details>
+<summary>Output</summary>
+
+```js
+;[
+  {
+    clientOrderId: "qhcZw71gAkCCTv0t0k8LUK",
+    cummulativeQuoteQty: "0.00000000",
+    executedQty: "0.00000000",
+    icebergQty: "0.00000000",
+    isWorking: true,
+    orderId: 211842552,
+    origQty: "0.30000000",
+    price: "0.00475010",
+    side: "SELL",
+    status: "NEW",
+    stopPrice: "0.00000000",
+    symbol: "BNBBTC",
+    isIsolated: true,
+    time: 1562040170089,
+    timeInForce: "GTC",
+    type: "LIMIT",
+    selfTradePreventionMode: "NONE",
+    updateTime: 1562040170089
+	}
+]
+```
+
+</details>
+
+#### marginCancelOpenOrders
+
+Cancels all active orders on a symbol for margin account.
+This includes OCO orders.
+
+```js
+console.log(
+  await client.marginCancelOpenOrders({
+    symbol: 'ETHBTC'
+  }),
+)
+```
+| Param      | Type     | Required  |
+|------------|----------|-----------|
+| symbol     | String   | true      |
+| isIsolated | String   | false     |  
+
+<details>
+<summary>Output</summary>
+
+```js
+[
+  {
+    symbol: 'ETHBTC',
+    isIsolated: false,
+    origClientOrderId: 'bnAoRHgI18gRD80FJmsfNP',
+    orderId: 1,
+    clientOrderId: 'RViSsQPTp1v3WmLYpeKT11'
+  },
+  {
+    symbol: 'ETHBTC',
+    isIsolated: false,
+    origClientOrderId: 'IDbzcGmfwSCKihxILK1snu',
+    orderId: 2,
+    clientOrderId: 'HKFcuWAm9euMgRuwVGR8CL'
+  }
+]
+```
+
+</details>
+
 #### marginGetOrder
 
 Query Margin Account's Order
diff --git a/index.d.ts b/index.d.ts
index 429912d..b533399 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -378,6 +378,12 @@ declare module 'binance-api-node' {
     useServerTime?: boolean
   }
 
+  export type marginCancelOpenOrdersOptions = {
+    symbol: string
+    useServerTime?: boolean,
+    isIsolated?: 'TRUE' | 'FALSE' | boolean
+  }
+
   export interface GetInfo {
     spot: GetInfoDetails
     futures: GetInfoDetails
@@ -770,6 +776,7 @@ declare module 'binance-api-node' {
       symbol?: string
       useServerTime?: boolean
     }): Promise<QueryOrderResult[]>
+    marginCancelOpenOrders(options: marginCancelOpenOrdersOptions): Promise<CancelOrderResult[]>
     marginRepay(options: MarginBorrowOptions): Promise<{ tranId: number }>
     marginLoan(options: MarginBorrowOptions): Promise<{ tranId: number }>
     marginAccountInfo(options?: { recvWindow?: number }): Promise<IsolatedCrossAccount>
diff --git a/src/http-client.js b/src/http-client.js
index 642754f..4a53799 100644
--- a/src/http-client.js
+++ b/src/http-client.js
@@ -440,6 +440,7 @@ export default opts => {
     marginGetOrderOco: payload => privCall('/sapi/v1/margin/orderList', payload),
     marginCancelOrder: payload => privCall('/sapi/v1/margin/order', payload, 'DELETE'),
     marginOpenOrders: payload => privCall('/sapi/v1/margin/openOrders', payload),
+    marginCancelOpenOrders: payload => privCall('/sapi/v1/margin/openOrders', payload, 'DELETE'),
     marginAccountInfo: payload => privCall('/sapi/v1/margin/account', payload),
     marginMyTrades: payload => privCall('/sapi/v1/margin/myTrades', payload),
     marginRepay: payload => privCall('/sapi/v1/margin/repay', payload, 'POST'),