Bronchial asthma: it is characterized by recurrent episodes of wheezing, phlegm sound with shortness of breath and chest tightness, often occurring at night and in the early morning and aggravated by exposure to allergens, cold air, physical and chemical stimuli, as well as viral It is often associated with exposure to allergens, cold air, physical and chemical stimuli, and viral upper respiratory infections. It is recommended to confirm the diagnosis with routine blood tests, arterial blood gases, sputum and pulmonary function tests, chest X-ray or CT, avoid or reduce the exposure to various possible allergens, and pay attention to cold and warmth. Medication can be applied to relax bronchial smooth muscle with bronchodilators such as theophylline, glucocorticoids can also be used to combat allergic inflammation, and bronchial thermoplasty is also feasible. 2. Asthmatic bronchitis: prolonged expiratory time, wheezing with rales and coarse wet rales, most patients can have fever, routine blood tests, X-ray and bronchoscopy are recommended to confirm the diagnosis. Glucocorticoids, antiviral drugs and antibiotics can be used to treat the infection. Daily ensure adequate water intake, maintain hand hygiene, avoid contact with infectious sources, and increase air humidity appropriately; 3. Heart failure: there are often symptoms of dyspnea, weakness, edema with cough and heavy sputum sound. Diagnosis can be confirmed by electrocardiogram, heart failure marker test and blood gas analysis, diuretics and cardiac stimulants can be applied for treatment, acute heart failure can be treated with oxygen via face mask or nasal catheter, while strictly controlling the amount of fluid, ensuring sufficient sleep, avoiding late nights and bad emotions such as tension, anxiety and anger.