Abstract: With the rapid development of software technology,front-rear end separation technology has become an indispensable technology in the field of Internet.In order to solve the shortcomings of the traditional Web development,such as high coupling degree of code,low development efficiency and poor maintainability,combining with the traditional software architecture pattern,it discusses a software architecture pattern based on MVVM pattern and RESTful API interface,and applies this software architecture pattern to an online shopping platform.