You can open a building materials store on Xiaohongshu in the following ways: register an account using the Xiaohongshu merchant platform, upload store information and product information, set store tags and promotions, and attract customers. Because Xiaohongshu is a content-centric e-commerce platform, building materials merchants can attract users and build influence and trust by publishing informative and practical content on the platform; at the same time, they can also set up store promotions through shopping cards, red envelopes, etc., to reduce user purchase costs and increase sales. In addition, building materials merchants can increase brand exposure, expand customer base, and achieve greater commercial value by cooperating with Internet celebrities or KOLs, or participating in Xiaohongshu's offline activities.