Abstract: The design idea of inspection and testing system, which is mainly based on management mode, automatic intellectualization and informationization of the instrument was introduced. The importance of inspection and testing design in system certification is expounded, including quality management, environment management, occupational health and safety management. The principles of process design as well as the interface relationships with architecture, structure, ventilation, water supply and drainage, and electrical are proposed, which essentially improve the design quality and reduce the risk in design and later use. We should keep up with the pace of industry development and constantly optimize the design concept, communicate the management system certification audit and related needs, and extend the influence of design services.