I have bound it on Taobao mobile phone, but why can't I get a message with my baby? ?

Taobao's mobile phone reminder project does not remind you to buy goods. You can try to log in to Alipay, bind your mobile phone to Alipay account, and then see if there is this option in Alipay's mobile phone reminder. If there is, check it and I will remind you when I buy something in the future. (But not 100%, because sometimes the server is a little silly, or delayed, or even not sent).