The practice of adopting performance appraisal management in large business enterprise group shows that the assessing criteria are not consistent among different team leaders, this is also known as the problem of “loose or tight” This article discusses the method for assessing performance level, taxis scope, taxis process, etc It proposes revised employee performance level assessing model to resolve the problem of “loose or tight” This model combines employee performance level with team result and employee individual result, so solves the problem of “loose or tight” of different team assessor when deciding employee performance level