# 【商户-API支付】如何设置收银台币种汇率差？

设置币种汇率差，可以有效降低因汇率波动而导致收款金额不足的风险。比如当前汇率为1USDT=13TRX，如您设置的多币种汇率差为10%，用户使用TRX支付1USDT的订单时，则需支付13+1.3=14.3TRX。

* **设置多币种支付的页面中，点击“设置多币种汇率差”**

<figure><img src="/files/kTEFLm9xCpmDt5VU7JMl" alt=""><figcaption></figcaption></figure>

* **选择公链，点击“编辑”**

<figure><img src="/files/siyUp3SGtVKO8i6hKtBE" alt=""><figcaption></figcaption></figure>

* **输入汇率差，点击“保存”即可**

<figure><img src="/files/KlzxYRaoO07fjMEcTYRD" alt=""><figcaption></figcaption></figure>


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