With the development of modern sports, the application of mental training is more and more extensive in training and contest. Mental training becomes an important guarantee to defeat opponents. Based on the literature studies and traing practice, this article analyses the mental characteristic of the volleyball players and the decisive factors of mental characteristics,the factors include the activity structure of volleyball sports ,the subjective and objective condition,all kinds of courses of incentive response and the development of high standard of volleyball sports. In the light of exsiting circumstances, this article puts forword valid methods for mental preparation and mental training, and provided training basis theoretically for the volleyball coaches.