The functionality of the respiratory system strongly determines the effectiveness of any physical work. The importance of the development of the respiratory system for the success of any sports activity is undoubted. It is of interest to clarify its level of development among representatives of martial arts. Purpose of the study - to determine the degree of development of the respiratory system in young judokas with different training regimens. Methodology and organization of the study. We observed 37 university students of youthful age who regularly attended the judo section for at least 6 months: 12 people 2 times a week, 14 people 4 times a week and 11 people 6 times a week. As a control group, a sample of 15 students of the same universities of youthful age, who had not previously participated in sports activities, was determined. Several key indicators of the respiratory system were evaluated. Statistical processing of the results of the observation was performed. Research results and discussion. In young judokas, high values of the parameters of the respiratory system of a volumetric and speed nature were found. Their maximum development was in young men training in the section 6 times a week. Obviously, judo classes in the case of increased training lead to a functional strengthening of the muscular frame of the chest, to the expansion of the bronchi and trachea, and to an increase in the general physical parameters of the trainees. Conclusions. In the case of regular judo classes, the development of the external respiration system and expiratory muscles intensifies in young students as training becomes more frequent