A little dry cough should be noted as follows: 1, the airway is too dry, is the outside air too dry, drink less water, diet taste too heavy, these conditions may cause a lack of water in the airway, and then sensitivity will increase, then there will be a dry cough; 2, allergic diseases, if if you have an allergic body, there will also be an allergic reaction in the airway, there will often be a dry cough, the typical performance is in contact with the The typical manifestation is that the cough may be triggered by contact with allergens, hot or cold, or strange smells in the air, and this is more of an allergy; 3. The cough will naturally get better.