> 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/jiao-yi-ji-qi-ren/xian-huo-wang-ge.md).

# 现货网格

## **为什么需要两种资产？**

现货网格同时需要：

* **计价资产**（如 USDC）→ 用于买入订单
* **基础资产**（如 BTC）→ 用于卖出订单

订单根据以下参数预先计算：

* 价格范围
* 网格数量
* 总投入金额

## **什么是缺口（Deficit）？**

缺口是指下达所有卖出订单所缺少的基础资产数量。

**示例：**

* 网格：BTC/USDC，范围 $90–$110
* 当前价格：$100
* 卖出订单所需 BTC：0.5 BTC
* 可用数量：0.2 BTC

→ 缺口 = **0.3 BTC**

**缺口状态**

* **缺口 = 0** → 无需操作
* **缺口 > 0** → 您必须选择一种资金补充方式

## **资金补充方式：借贷模式与买入模式**

|      | 借贷模式   | 买入模式           |
| ---- | ------ | -------------- |
| 工作原理 | 借入基础资产 | 使用 USDC 买入基础资产 |
| 前期成本 | 无      | 立即减少 USDC      |
| 持续成本 | 产生利息   | 无              |

{% hint style="info" %}
**注意：**\
买入模式使用 **最高买入价格（Max Entry Price）**来限制买入价格上限（默认约为当前价格上方 1%）。
{% endhint %}

**自动选择逻辑**

系统将自动选择资金补充方式：

* 基础资产充足 → 无需补充资金
* 仅一种方式可用 → 使用该方式
* 两种方式均可用 → 默认使用**借贷模式**（可手动切换）


---

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