Children coughing repeatedly may be frequent colds, tuberculosis, cough variant asthma, bronchitis and other reasons. 1. Frequent colds: small children are prone to recurrent upper respiratory tract infections that cause recurrent coughs when they are exposed to colds for long periods of time, frequent exposure to colds, lack of exercise and poor nutrition resulting in poor resistance. 2. Tuberculosis: children infected with Mycobacterium tuberculosis caused by tuberculosis, triggering a specific inflammatory response in lung tissue, resulting in recurrent cough, low-grade fever, fatigue and other symptoms. 3. Cough variant asthma: it may be related to heredity, contact with allergens and other factors, mainly manifested as repeated irritating dry cough without shortness of breath, chest tightness and other symptoms, and the symptoms can be relieved by anti-asthma treatment. 4. Bronchitis: bronchial tube long-term repeated infectious stimuli or dust and other non-infectious stimuli, resulting in chronic inflammatory reaction of the bronchial mucosa, cough, cough sputum, shortness of breath and other symptoms. Children coughing repeatedly may be related to a variety of factors, such as long-term recurrent cough, mycoplasma infection, allergic diseases, congenital lung dysplasia or malformation, etc., it is recommended to consult a doctor to clarify the diagnosis.