With rapid development of internet, various applications based on internet are increasingly highlighted. In the teaching of quality and technology supervision system, there are more and more businesses to use computer and the theory can be combined with practice to complete work with strong profession including inspection and enforcement. It requires staff in the system to learn theoretical knowledge and practice a lot to master knowledge really and play a role in practical application. In the current education and assessment mode, real level of staff cannot be assessed really. In terms of level in the practice aspect, it cannot guide staff to learn these courses with effective means. The online testing system based on Web comes into being under the circumstance. It gradually develops with network technology and database technology. It can test staff at any time with the network, stretching traditional testing room; in addition, network resources can be utilized effectively to service quality supervision cause in a better way.