Spring is here and everyone is trekking to enjoy the flowers, but asthma patients should be aware that this is also the season for exacerbation or recurrence of the disease. It may be related to three factors: first, irregular treatment in the early stage, second, it is related to the increase of allergens in spring; third, exercise also becomes a trigger factor. Standardized treatment is important: some patients stop taking medication when their condition is slightly controlled, and some patients do not do follow-up treatment after going to the emergency department for an injection to stop asthma, which results in a potential recurrence of the old disease. Some patients purchase their own medication, which makes follow-up treatment more difficult. If a few patients see the medical advertisements, they buy those “powder drugs” that do not even have a license plate to take, which may have some effect at first, but the side effects of the drugs are exposed after a long time. In this case, the relapse is very troublesome to treat, because who knows what ingredients are in those drugs. Asthma is a chronic disease that requires ongoing medical management and self-management by the patient. Whether the condition is mild or severe, patients should take their medications as prescribed. Whether reducing, stopping or purchasing medication should be done under the guidance of a doctor, never use medication indiscriminately. Avoid contact with allergens and irritants: There are more allergens in spring and summer, such as pollen from plants, dust mites on beds, carpets and furniture, and hair from pets, etc. Patients should find allergens that trigger asthma and try not to contact them, and improve home and work environments if necessary. Foods such as wine, shrimp and seafood are irritating and can cause allergic reactions, making the condition recur or worsen. Also avoid repeated respiratory infections. Exercise can trigger asthma: Some asthma patients will develop asthma as a result of exercise, especially when strenuous exercise is a likely trigger. This also usually indicates that the patient is not well controlled, so medication should be used appropriately to reduce inflammation in the bronchial tubes (non-specific inflammation, antibiotics should not be used if there is no co-infection). If there is still a problem of exercise-induced asthma after medication, you can use some inhaled medication and do warm-up exercises before exercise, and such patients should avoid strenuous exercise. Some other precautions are also important: 1. Avoid repeated exposure to cold, which may induce repeated respiratory tract infections and trigger or aggravate asthma. Also cold air in winter is stimulating to asthma patients, and some patients may have asthma attacks due to cold air stimulation. 2.Avoid irritating gases (such as oil fumes, cigarettes, etc.) and food. If you are a smoker, you must quit smoking. 3.Do not go out in hazy weather as much as possible, and wear a mask when you go out. Haze is very irritating and harmful to the airways of normal people, and even more harmful to patients with existing respiratory diseases. 4, appropriate exercise under the guidance of a physician.