The invention relates to the computer application technology field and particularly relates to a multi-store e-commerce cloud system based on cloud computing and the mobile Internet technology and an ordering shopping realization method thereof. The system comprises a presentation layer, a business layer, a service layer, a basic application layer and a platform resource layer, wherein the presentation layer is a user experience end, including a Web end mall, APP, or a micro mall of a WeChat public number, and the business layer is a business flow layer and is used for realizing main business flows of the e-commerce cloud system. According to the system, a data processing speed and information exchange timeliness are improved through advanced configuration, and better merchant and client experience effects are realized. The system further has advantages of safety, advancement, normalization, investment protection, high availability, reliability, applicability, easy operation, scalability and compatibility.