There are usually several reasons for a child’s cough: First, it is more common that there may be allergic factors. If there are common allergens in the home environment, such as mites, dust, etc., and if there are allergy-prone foods in the diet, it is easy to develop a cough. Second, the child may have poor immunity and resistance and may be susceptible to viral or bacterial infections that cause recurrent coughing. Third, we should be aware that children may have underlying diseases, such as chronic rhinitis, chronic sinusitis, and chronic laryngitis, which can easily lead to recurrent coughing due to pathogens or environmental factors, and patients with asthma are also prone to coughing.