To open an online store on JD.com, you first need to register a JD.com merchant account. Then, choose the appropriate store type according to your business needs, such as a self-operated store, a franchise store, or a flagship store.

Next, prepare relevant information according to JD.com's requirements, including business license, tax registration certificate, etc.

After completing the information preparation, submit the application and wait for JD.com to review.

After the review is passed, you can start setting store information, uploading products, and conducting operations and promotions. At the same time, you also need to pay attention to JD.com's operating policies and regulations, set reasonable prices, and provide quality services to attract more consumers. By continuously optimizing operations and increasing sales, you can achieve the development and growth of online stores.