Cough at night, may be dry mouth, colds, allergies, infectious diseases caused by, there is no so-called tricks can immediately stop coughing, you can take the right amount of warm water, if necessary, given to stop coughing, anti-allergy drugs, can relieve coughing. 1. Dry mouth: open-mouth breathing during sleep, the room is dry, resulting in itching of the mucous membranes of the throat, can cause coughing, at this time, you can take the right amount of warm water, can relieve oral dryness, can help improve the symptoms. 2. Colds: Colds are related to viral infections, and pathogenic bacteria act on the mucous membrane of the throat, leading to damage of the mucous membrane of the throat, which can cause cough. It is recommended to increase the amount of water, pay attention to rest. If the cough is severe, cough syrup can be given to help relieve symptoms. 3. Allergy: Allergy to indoor objects can cause allergic cough, you can give anti-allergy drugs, such as loratadine, fexofenadine, can help relieve cough. 4. Infectious diseases: bronchitis, bronchitis, pneumonia, tuberculosis can lead to an increase in throat secretions, which can also cause coughing at night, anti-infective drugs can be given, such as ceftriaxone, amoxicillin, etc., which can help relieve the symptoms. Cough may also have other causes, such as lung tumors, left heart failure, reflux esophagitis and other diseases, it is recommended to go to the hospital in a timely manner to find out the cause of the cough and give standardized treatment.