Cough without phlegm is a hot cough, considered to be caused by upper respiratory tract germs infection, this situation is recommended to eat more cough relief and lung moistening food, such as ice sugar snow pear, Chuanbei loquat paste, can have a very good lung moistening effect. Usually you can take watermelon cream tablets orally to relieve the symptoms of dry and itchy throat. It is recommended to always drink plenty of plain water to moisten the respiratory tract and be able to avoid coughing all the time. Pay more attention to rest during coughing and do not drink alcohol or eat spicy food. If the cough is severe, it is likely to lead to bronchitis or pharyngitis, which will have a greater impact on the body. You must go to the respiratory medicine department of the hospital in time to determine the condition through blood tests, chest CT and so on, and make a targeted treatment plan.