Appropriate regular physical exercise can enhance physical fitness, especially increase lung capacity, help to achieve asthma control as soon as possible, which is beneficial to the physical and mental health of children. Children with asthma should be encouraged to enhance physical exercise on the basis of adherence to medication. Observe whether exercise causes coughing, wheezing and the use of bronchodilators, and adjust the medication regimen in a timely manner according to the child’s tolerance to exercise and changes in peak flow rate (lung function). Each parent of a child with asthma should discuss with the engineer and the child to choose the appropriate exercise program according to the different severity of the disease, medication, age, physical condition, personal exercise tolerance and preference. 1.Form of sports: sports that do not easily trigger asthma include: swimming, walking, jogging, or alternating walking and running, rope skipping, short distance track and field sports, recreational cycling, gymnastics, various ball sports such as baseball, volleyball, tennis, golf and other sports. Swimming is the most suitable sport for children with asthma. Compared with other sports, swimming is less likely to cause airway obstruction in children with asthma. Regular and regular swimming can improve the lung function of children with asthma, increase lung capacity, improve the physical condition of children with asthma, inhibit the development and changes of the disease, and play a non-pharmacological role. Therefore, it is especially recommended that those who are able to do so adhere to swimming. Larger children can swim once a day for 1 to 2 hours, with several breaks in between (20 to 30 minutes is appropriate), without getting cold during the breaks to prevent catching a cold. However, if you choose an indoor swimming pool with too high a concentration of chlorine for disinfection, it can instead damage your child’s lungs and induce exercise asthma. So if you wish to get fit by swimming, it is important to choose a natural and safe swimming pool. Sports that can easily induce asthma are: racing, soccer, bicycle racing, basketball and other competitive sports. 2.Exercise time Children with asthma should determine the exercise time according to the individual tolerance amount of the chosen exercise and their own preferences. They should not have coughing and wheezing after exercise, and the peak flow rate value should be in the normal range, and they should not overload strenuous exercise or force prolonged exercise. It is recommended that it is best to adhere to at least one activity per day, at least 15 to 30 minutes per activity, no less than 4 to 5 days per week, whistling at ~ 45 times / min, heart rate of no more than 120 to 140 times / min appropriate. 3, the intensity of exercise to exercise without fatigue or obvious discomfort as the degree. 4.Caution (1) Gradually, according to ability: start with a small amount of exercise and gradually increase it so that the amount of exercise is within your tolerance; for younger people, or children with moderate or severe asthma, or those with other serious comorbidities, the intensity of exercise should be reduced to avoid neutral accidents and prevent excessive fatigue. (2) Pay attention to the change of disease: exercise-induced asthma is more common in children with asthma, especially in children with unfavorable disease control and irregular medication. Therefore, attention should be paid to whether coughing, chest tightness or wheezing occurs during or after exercise. (3) Suspension or postponement of exercise: It is advisable to temporarily refrain from exercise when the disease is first healed or when there is an aura of asthma attack, or during the acute phase or severe asthma attack. (4) Choice of sports venues: Care should be taken to avoid sports on venues where there are factors that trigger asthma attacks. Such as dusty closed or airless gymnasiums, especially carpeted or matted gymnasiums; freshly mowed grass, or places with high amounts of pollen in the air; trees after rain or humid plum rain; environments with high air pollution index; dusty environments near construction sites; dry and cold environments (outdoor environments in winter).