Runny eyes and nose for 1 month may be caused by allergic rhinitis and upper respiratory tract infection. 1. Allergic rhinitis: It is a symptom triggered by low immunity and resistance, and the patient is exposed to allergens such as pollen, mites, cold air and irritating odors, which are usually manifested as symptoms such as runny nose, watery eyes, sneezing, and itchy nose. 2. Chronic rhinitis: Repeated sinus infections can cause tearing, runny nose and other symptoms to recur. 3. Upper respiratory tract infections can be viral or bacterial infections caused by nasolacrimal duct blockage, edema and other symptoms caused by tears, runny nose, upper respiratory tract infections can generally be relieved in about 1 week, such as the symptoms of delayed to more than 1 month, we need to consider whether the immune system is low or insufficient treatment caused by the treatment program. In short, the symptoms of the above symptoms by symptomatic treatment effect is not good, we recommend that the patient timely improve the medical examination to clarify the cause of the disease after targeted treatment.