If a patient has not recovered from a cold for two months, you can basically rule out a cold and instead consider the possibility of other diseases. Because colds are acute upper respiratory tract infections, the vast majority of which are caused by viruses, they are self-limiting and their course is usually about a week. Cold can appear coughing, coughing phlegm, fever, as well as nasal congestion, runny nose symptoms, other diseases are as follows: 1. Rhinitis: if repeatedly runny nose and runny nose symptoms, two months still not well, generally to consider the possibility of the existence of rhinitis. You can improve rhinoscopy and give antihistamine treatment, such as cetirizine hydrochloride. 2. Lower respiratory tract infection: If coughing and coughing do not improve in two months, you should consider the possibility of lower respiratory tract infection, and you can improve chest X-ray and lung CT examination in time. 3. Other infections: If fever does not improve in two months, you should consider the existence of other more complicated infections, and you need to improve further. Blood analysis, sputum culture, drug sensitivity test results, to clarify the specific cause.