Cough after a cold, may be a cold cough, tuberculosis, irritating cough, cough variant asthma, etc., can be anti-infectious, anti-tuberculosis, detachment from the environment, expansion of the bronchial tubes and other different treatments. 1. Cough after cold: it may be related to the upper respiratory tract infection that cannot be fully controlled, and can be treated with symptomatic cough suppressant drugs such as dextromethorphan as prescribed by the doctor. 2. Tuberculosis: can cause dry cough, need to carry out timely anti-tuberculosis treatment, the use of rifampicin, isoniazid and other drugs. 3. Irritant cough: due to the more sensitive to the irritant gases in the air, can lead to irritant cough, need to get out of the environment in a timely manner, and do a good job of self-protection, such as wearing a mask. 4. Cough variant asthma: timely bronchodilator treatment, the use of albuterol and other drugs. After a good cold and dry cough, it is recommended to improve the relevant laboratory tests, clear cause, follow the doctor’s instructions standardized treatment.