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title: "什么是\"敲入界限\"? 它有哪些观察类型？"
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description: "敲入界限是判断投资者是否要承担接票风险的价格线，通常设得比敲出界限低很多 (如初始价的 70% / 75%)。若挂钩标的跌破敲入界限，就可能触发潜在亏损机制——最典型的是按执行价买入挂钩标的(个股 / ETF 等可交割标的)，或以现金结算方式承担本金亏损 (指数类等不可交割标的)。敲入本身不等于立刻亏损，最终亏不亏还要"
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# 什么是"敲入界限"? 它有哪些观察类型？

> [Help Center](https://longbridge.com/hk/en/support.md) / [Investment Academy](https://longbridge.com/hk/en/support/category/investmentacademy.md) / [Structured Product Q&A](https://longbridge.com/hk/en/support/category/investmentacademy.md#structured_product_qa)

敲入界限是**判断投资者是否要承担接票风险的价格线**，通常设得比敲出界限低很多 (如初始价的 **70% / 75%**)。

若挂钩标的**跌破敲入界限**，就可能触发潜在亏损机制——最典型的是**按执行价买入挂钩标的**(个股 / ETF 等可交割标的)，或以**现金结算**方式承担本金亏损 (指数类等不可交割标的)。

> 敲入本身**不等于立刻亏损**，最终亏不亏还要看到期价格是否低于执行价。

**敲入的两种观察方式：**

**美式观察 (AKI):** 存续期内，**任一交易日的收盘价**低于敲入界限，即触发敲入。

**欧式观察 (EKI):** **仅在到期日**观察，**到期日收盘价**低于敲入界限，才触发敲入。

## Related articles

- [什么是结构性产品？](https://longbridge.com/hk/en/support/topics/structured_product_qa/oh1t6b.md) — Structured Product Q&A
- [结构性产品的认购门槛是多少？](https://longbridge.com/hk/en/support/topics/structured_product_qa/pobqcu.md) — Structured Product Q&A


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> **Disclaimer: This article is for reference only and does not constitute any investment advice.**