A constant flow of clear watery nose from one side of the nose is usually caused by allergic rhinitis. In addition to clear water-like discharge, the patient will also have sneezing and nasal congestion. In terms of treatment, the main thing is to use targeted nasal hormone sprays, such as endosulpride, rhinocort or co-cortisone. If the symptoms are more serious, you can use anti-allergy drugs, such as desloratadine tablets, as appropriate, together with drugs to improve the immunity of the body, which will also help the recovery of the disease. Nasal rinsing with saline or seawater can also help in recovery.