开通支付宝花呗收款的方法如下：
1、首先需要开通支付宝商家收钱码，成为支付宝商家用户，点击收款。
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2、点击收钱之后，就会看到个人收钱码，在个人收钱码下方点击商家服务。
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3、进入商家服务的页面之后，就可以看到花呗收钱，点击进去。
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4、在阅读了支付宝相关的花呗收钱的规定之后，就可以开通花呗收钱服务了。
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5、如果符合相关规定，就会出现开通成功的界面，商家就可以使用支付宝花呗收款的服务了。
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