With the increasingly fierce market competition, if enterprises want to grow in the competition and develop steadily, then it is particularly important to propose a set of efficient internal management system and system. The function of performance management is to closely link all the work in human resource management practice. It is a core position in human resource management practice. Cadre selection, career development, salary and welfare, training and development, recruitment and allocation are closely related to performance management. Excellent performance management can give full play to the creativity, initiative and enthusiasm of employees. In the specific practice of performance management, when managing individual performance, the results and behavior of individual performance should be considered comprehensively. On the one hand, individual behavior should be considered, on the other hand, individual final results should be taken into account. Therefore, this paper takes high-tech communication enterprises as an example, analyzes the status and problems of performance management in small and medium-sized enterprises, and puts forward corresponding suggestions for improvement.