If you don’t cough during the day, but cough at night, the main consideration is allergic cough, variant asthma may also be greater, it is best to go to the hospital to do routine blood tests, also need to check allergens. If it is caused by allergies, you can first use anti-allergy medication, you can take oral loratadine, but also need to take appropriate oral moistening of the lungs and cough medication. Usually pay attention to the bedroom there is no cause of allergies in the things, to often open the window ventilation, room cleaning; try not to keep pets, do not keep flowers and plants; usually pay attention to rest and diet, improve the body’s ability to resist.