> For the complete documentation index, see [llms.txt](https://support.backpack.exchange/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.backpack.exchange/support-docs/cn/jiao-yi-suo/jiao-yi/ding-dan-lei-xing/shi-jia-dan.md).
# 市价单
打开 [**Backpack Exchange** ](https://backpack.exchange/)并登录，然后再按照以下步骤操作。
> Backpack 新用户？请先[创建账户](/support-docs/cn/jiao-yi-suo/jiao-yi-suo-zhang-hu/chuang-jian-xin-zhang-hu/zai-wang-ye-duan-chuang-jian-xin-zhang-hu.md)。
**市价单 (Market Order)** 是一种按照订单簿中当前最佳可用价格立即买入或卖出的指令。
### **何时使用？**
* 当您希望订单能 **即时成交** 时。
* 适合快速进入或退出仓位，即使价格有轻微波动也能执行。
### **关键点**
* **成交有保障** ，但价格可能会因市场流动性影响而有轻微差异（滑点）。
* 更适合 **紧急交易** ，而不是需要精准控制价格的情况。
### 如何降低使用市价单时的滑点风险？
* 在 **现货** 或 **合约** 交易页面，选择您想交易的代币。
* 确认交易方向后，选择 **市价单（Market Order）** 。
* 输入订单数量。
* 点击 **最大滑点设置（Max Slippage Setting）** ，输入您可以接受的最大滑点范围。
* 确认订单。
---
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