Dry cough is a cough without sputum or with a small amount of white mucus sputum. Because of the excitement of the vagus nerve at night, coughs are more frequent at night. The following is a specific analysis of how to do a dry cough at night: 1. If there is inflammation, the first thing you need is antibiotics to treat it, and it is generally recommended that you take them orally, and if the oral effect is not good, you can take them intravenously, and you can apply hormones locally. 2, the drug environment factors, such as the treatment of high blood pressure drugs, Enalapril will cause dry cough, this situation requires adjustment of blood pressure drugs, to avoid the side effects of dry cough drugs continue to take. 3, the environment is dry, dirty can also cause dry cough, such cases need to keep the environment moist, you can use a clean air humidifier. Keep the air fresh and the dry cough will be relieved. 4. The cough may worsen during sleep and may be related to the sleeping posture, which leads to poor breathing, so you need to sleep with a slightly higher pillow. In summary, a dry cough at night requires a comprehensive analysis of the causes and symptomatic treatment according to them.