1. Ensure the completion of the target. The performance appraisal system will provide employees with clear work objectives and completion standards, not only to assess the results, but also to manage and supervise them in the process. Only by transforming the company's big goals into personal performance goals can we complete the company's tasks with good quality and quantity.

2. Find problems and improve tasks. Performance appraisal is a process of planning, implementing, checking and handling. Through the feedback information of employee performance appraisal, find out the problems existing in the task or plan, so as to continuously improve and perfect.

3. Mobilize the enthusiasm of employees. The performance appraisal system will divide the salary of employees into fixed salary and performance salary. In this way, the interests of employees are linked to performance, making performance appraisal more powerful. The result of performance appraisal not only affects the salary of employees, but also affects the rise and fall of positions. In order to obtain good performance, employees will work and grow more actively and seriously, thus establishing a benign incentive mechanism.

4. Enterprises and employees win-win. Rewarding and punishing wages and promoting positions through performance appraisal can make employees realize the gap between themselves and others, find their own problems, and improve and develop themselves. Moreover, through the feedback of performance, enterprises can arrange training more reasonably, let employees participate in training more scientifically, let enterprises develop healthily and realize a win-win situation for enterprises and employees.