Aiming at the problems existed in the performance management system that the evaluation system is not reasonable，that the inspection（evaluation）standard is not unified，that human factors influence is too big， according to the actual circumstance of XXX school，combining school development orientation and the expert's advice，We put forward the idea of the design of performance management system based on WEB，In order to provide a fair and reasonable performance management evaluation platform. In this paper，it completed the system roles identifing，system function module design and design of evaluation index and index weight based on the detailed requirements analysis；In the VS2005 environment，the system coding，debugging are completed using asp.net language. Finally，we carried out a month-long tests in XXX school，the results showed that the system design basically reached the expected purpose.