To log in to Temu's sub-account, you first need to create the sub-account on the Temu official website or Temu application, and set the account name and password for it.

Then, select "Sub-account login" on the login interface, enter the account name and password of the sub-account, and you can log in successfully. It should be noted that the sub-account needs to be authorized to use Temu services, and some functions may be restricted, depending on the actual situation. If you encounter problems logging in, you can seek help on the official website or application or contact customer service for consultation.