The condition of not having a cold but having a runny nose all the time may generally be related to allergic rhinitis and sinusitis. Allergic rhinitis: Generally in contact with pollen, dust mites, animal fur, etc., some people are prone to allergic reactions, then sneezing, watery nasal discharge, nasal congestion and itchy nose symptoms will occur. Usually caused by an abnormal reaction of the body’s immune system, patients can be treated with loratadine tablets and cetirizine hydrochloride tablets. Sinusitis: can also cause nasal congestion, runny nose, headache and other phenomena, mainly due to the upper respiratory tract infection, acute rhinitis and so on. The more common causative organisms are Streptococcus pneumoniae, hemolytic streptococcus and staphylococcus and other purulent cocci. Patients can use amoxicillin clavulanate potassium, ceftazidime and other drugs for treatment, but also nasal irrigation to clean up secretions. It is recommended that when there is no cold with an old runny nose, go to the hospital in time, make a clear diagnosis and then carry out standardized treatment, and use reasonable medication under the guidance of the doctor.