What are the main points for attention in learning clarinet (-) first of all, we should pay attention to the problem of breathing. The pronunciation of all wind instruments is produced by the pressure blowing into the instrument, and breathing is the root of the wind instrument. Beginners must learn the correct breathing method after fixing the mouth shape and mastering a certain number of notes. Among them, breathing is the most easily despised problem. On the one hand, beginners are short of gas, air exchange time and skills are not mastered, and the slower they blow, the faster they often blow, and by improving their finger skills and speed to make up for the lack of gas. On the other hand, although the speed of practice has been improved, the short time of air grab, the small amount of air inhaled, often too late to breathe, the first few sections can still persist, and then must "make a mistake after the pause" or rely on random ventilation to alleviate breathing problems. Therefore, beginners should make clear the importance of breathing from the beginning, learn the chest and abdomen breathing method (the practice method of chest and abdomen breathing is not repeated here), and emphasize the gradual development of breathing technology. High quality performance requires a high level of breathing technology.