Abstract: Performance Appraisal is one of the most important functions of modern human resources management.Now more and more enterprises pay attention to its important influence in forming and promoting the organization performance.But many enterprises have not yielded satisfactory results in promoting the performance appraisal process.The reasons are from many aspects.In this paper,an all-around analysis is carried out on the common problems in the enterprise's performance appraisal and it manages to probe into the real causes of these problems.In the conclusion some measures and proposals are put forward based on the relevant theory and practice.