Purpose: to reveal features of psychological health and characteristics of personal development and mental "burn out" of athletes with different qualification. Material: the comparative analysis of mental expression of "burn out" in samples of athletes with different qualification (n=187). We tested men (n=110) and women (n=77) aged from 15 up to 29 years old. Athletes represented the following kinds of sport: boxing, fight, basketball, gymnastics, swimming, volleyball. They were divided into 2 groups: high qualification (Candidates and Masters of Sports, n=89) and low qualification (n=98). Results: it is observed a lot of positive correlation interrelations between indicators of psychological health and mental "burn out" of athletes. In the group of high qualification athletes, the indicators of psychological health are connected with reduction of achievement feeling and depreciation of achievements. In the group of low qualification athletes they were mainly connected with reduction of achievement feeling. The high qualification athletes are more subject to mental "burn out". It is connected with higher psychophysiological loads. These athletes are more inclined to creativity, humanity, are more intellectually developed. For low qualification athletes, the family sphere of life is more important. Conclusions: the received results testify to need of psychological support of training of athletes with different qualification to prevention and correction of mental "burn out" and maintenance of psychological health.