The common causes of automatic nasal discharge such as colds, rhinitis, cerebrospinal fluid nasal leakage, etc., the causes of different treatments are also different, can be general treatment, drug treatment, etc.. 1. Colds: Common causes of colds, such as viral infections, can cause patients to experience symptoms such as runny nose, nasal congestion, cough, sore throat and so on. It is recommended to use anti-viral oral solution, antipyretic and analgesic drugs such as ibuprofen under the guidance of a doctor, and pay attention to rest, drink more hot water, etc., when the condition is under control, the symptoms of runny nose will also be improved. 2. Rhinitis: If allergic or vasomotor rhinitis has an acute attack, the permeability of nasal blood vessels increases and the secretion of glands increases, which may cause symptoms such as runny nose and sneezing. Patients are advised to stay away from allergens and use antihistamines such as loratadine and glucocorticoid nasal sprays such as budesonide and mometasone furoate under doctor’s supervision. 3. Cerebrospinal fluid nasal leakage: such as traumatic cerebrospinal fluid nasal leakage will cause intermittent or continuous z-sexual outflow of clear fluid from the nasal cavity. The use of anti-infection, head-high position, avoid coughing, restriction of sodium intake and other conservative treatment, the condition does not improve recommended surgical repair. The appearance of automatic flow of clear water, there are other possibilities, it is recommended that patients go to the hospital in a timely manner, under the guidance of the doctor to avoid the deterioration of the condition.