The setting of pre-sales during the Spring Festival on JD.com can be completed through the following steps:

First, merchants need to log in to the JD.com merchant backend and find the "Pre-sale Management" option under the "Marketing Promotion" module.

Then, set parameters such as pre-sale time, deposit ratio, final payment time, and product delivery time, and upload product pictures and detailed information.

Finally, confirm the submission and wait for the review to pass. Setting up pre-sales can occupy the market in advance and increase sales benefits. At the same time, consumers can also understand and purchase their favorite products in advance.