To open a capital account on AliExpress, you first need to register an AliExpress account and complete real-name authentication. Then, log in to your AliExpress account, select "Capital Account" on the "My AliExpress" page, fill in the relevant information and bind your bank card. After opening a capital account, you can easily conduct online transactions, payment and collection, etc., to improve transaction efficiency and security. It should be noted that the opening of a capital account must comply with the relevant regulations and requirements of the AliExpress platform, such as the country/region of registration, transaction limits, etc.