To highly effectively carry out and manage the quality management system with convenience, according to the features of quality management system and the system requirements, a Quality Management Information System based on service-oriented architecture is studied, which is robust, well extensible and can be easily maintained. The main functional module of system can help in the PDCA circle of tasks, and can effectively assist the running of quality management architecture, as well as provid data support in its improvement process. This paper expounds the design and implementation of this system, and main functional module is also discussed in detail.