Asthma prevention and control is not difficult, swimmer Thorpe and flyer Joyner both suffer from asthma, but due to proper prevention and control, they do not hinder their sports career, but also frequently win the championship. Effective prevention and control of asthma requires special attention to the following aspects. 1, adjust the attitude, active treatment: some patients believe that asthma is incurable, with a broken attitude, and lose confidence in the treatment; another part of patients with an indifferent attitude, unwilling to seek medical treatment, treatment is not standardized. Both of these attitudes affect the control of asthma, which can easily lead to recurrent asthma attacks, progressive aggravation, and even sudden death. Patients should learn to monitor and manage their condition and use the peak velocity meter (an instrument for monitoring the condition) correctly under the guidance of the doctor. Those with stable disease can be measured once every 3 days and have a pulmonary function test once every 3 months. Regular follow-ups allow physicians to adjust the treatment plan according to the condition in a timely manner, check whether the patient’s medication is correct and whether the condition is under ideal control, etc. 3. Keep away from allergens: Asthma patients do not always have the same allergens. Dust mites in the house are the most common allergens, so it is important to keep the room clean, ventilate it frequently, dry the bedding, change the sheets and pillowcases, etc. Dust mite resistant bedding and pillowcases are available in the market and are recommended for people with severe mite allergies. Do not keep dogs, cats, flowers, birds, etc. at home, and do not use cosmetics if possible for those who are allergic to them. When pollen is floating in the air in spring and autumn, try to go out less and wear anti-pollen masks when you go out. 4.Reasonable diet: Asthma patients should eat light, easily digestible food, avoid cold food, cold drinks and spicy stimulating food, and try not to eat seafood and shrimp and crab food with high histamine content during the attack period. Forbid to eat foods known to trigger their asthma. 5, reduce exposure to harmful chemical gases and smoke and dust: formaldehyde released from renovation or work environment of chemical harmful gases, industrial emissions of smoke and dust can lead to persistent asthma attacks; parents indoor smoking can also lead to persistent asthma attacks in children. 6, strengthen physical exercise and cold exercise: exercise to reduce the chance of colds and improve lung function is very important for asthma patients. When asthma is effectively controlled, exercise should be carried out. Exercise should be adhered to for a long time and in a gradual manner. Pay attention to keeping warm in winter, you can inhale bronchodilator and drink some warm water before exercising. The best way to resist cold exercise is to insist on winter swimming or taking a cool shower, which can increase the patient’s ability to regulate the plant nerves, but it must be different from person to person, gradual, not forced. An exposure to ten cold instead will aggravate the disease. 7, always have asthma emergency drugs: during the outing, in addition to insist on inhaling long-term use of drugs, you can spare some short-acting bronchodilators and oral hormone drugs, once the condition is aggravated can be used under the guidance of a physician. Short-acting bronchodilators should not be used more than 3 sprays at a time to avoid life-threatening cardiac side effects.