Abstract:  Modern enterprises bring performance appraisal into a part of enterprise intemal management ,and take performance appraisal as an important way to divide work responsibilities，achieve enterprise ob-jectives and improve enterprise competitiveness. How to motivate employees to work better through per-formance appraisal is a common problem faced by all enterprises. Taking the sales staff of X agriculturalmaterials company as an example，this paper investigates the implementation，index design and evalua-tion content of the sales staff performance evaluation system by using the methods of questionnaine anwd in-terview. According to the investigation and analysis，it is found that the sales staff perfonmance appraisalsystem of X company has a series of prolems，such as unre asonable setting of performance objectives,excessive emphasis on results in appraisal indicators，one-sided appraisal dimensions and long appraisalcycle.Through the research and analysis of the research results ,it is found that the potential reasons forthe existing problems of the performance ap;uraisal system lie in the following aspects : ( 1 ) a unsubst anti-ated setting of appraisal objectives，(2) ignoring process inlicators ，( 3 ) a relatively single assessmentsubject，( 4) lack of process assessment.'The paper provides a reference for enterprises to build a reasonable employee assessment system and achieve a win-win sitution between employees and enterprises.

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