Always runny nose after eating is considered to be the consumption of spicy stimulating food, vasomotor rhinitis and chronic simple rhinitis and other causes. 1. Consumption of spicy and stimulating food: preferring to consume spicy and stimulating food will stimulate the nasal mucous membrane glands or the eyes to secrete tears, which may lead to an increase in secretion, resulting in the phenomenon of always having a runny nose, accompanied by an increase in salivation, tearing and so on. 2. Vasomotor rhinitis: the role of food type, temperature and emotional changes and other factors, can cause the human body autonomic sensitivity increases, nasal glands increase secretion, the phenomenon of always runny nose after eating. 3. Chronic simple rhinitis: the nasal mucosa is continuously in the state of congestion and edema, when eating because of the alternation of hot and cold air, resulting in nasal sensitivity, there will be always runny nose after eating symptoms. When the patient always runny nose after eating and accompanied by physical discomfort, it is recommended to go to the hospital in time to identify the cause of the disease, and give standardized treatment.