Clinical studies have shown that most patients with novel coronavirus conversion who still keep coughing may be the result of chronic bronchitis, chronic obstructive pulmonary disease, laryngitis, and so on. Generally, it can be relieved by general treatment and medication. 1. General treatment: It is generally believed to be caused by the long-term interaction between external factors such as smoking, infection, dust and chemical substances, and self-factors. Acute attacks can be repeated, and symptoms such as coughing, sputum and wheezing are aggravated during acute attacks. Symptoms can be alleviated by quitting smoking or improving the living environment. 2. Medication: If the patient suffers from laryngitis, there will also be a new type of coronavirus turn negative still keep coughing. The main reason is that the patient may be irritated by irritant gases or allergic substances that irritate the mucous membranes of the larynx, causing the patient to cough all the time even though he or she is negative for the new coronavirus. Cough suppressants and phlegm removers such as Ambroxol and various cough syrups can be continued under medical supervision.