To transfer a Taobao account to AliExpress, you first need to register an account on AliExpress, then log in to your AliExpress account, select "Store Settings" in "Seller Center", click "Store Information", find the "Taobao Synchronization" option in "Store Management" on the right side of the page, click "Synchronize Taobao Store", enter your Taobao account and password, and click "Confirm Synchronization".

After successful synchronization, AliExpress will automatically import the product information of the Taobao store into the AliExpress store. It should be noted that during the transfer process, you need to ensure that the real-name authentication information of the Taobao account and the AliExpress account is consistent, otherwise the transfer will fail.