Performance management is an important measure to innovate government management. As the tax department in charge of tax collection and management in China, it is of great significance to carry out the research on performance management under informatization. The implementation of performance management is an important achievement of the tax department in carrying out the Party's mass line education practice. However, the reality is that there are some problems in the performance management process of the tax department under the condition of informationization, such as "black-box operation", unclear management purpose, insufficient daily supervision and feedback, and imperfect incentive system. Under the condition of informationization, it is not only the need of government reform and modernization of tax management in the new period, but also an important topic to promote the continuous development of tax cause to introduce and apply the concept of performance management in the field of tax management and maximize the efficiency of tax work.