The effect of onion boiled water is to stop coughing and anti-inflammatory, and it can also improve malnutrition. Specifically, onion boiled water has the following effects: 1, auxiliary treatment of cough, asthma and other respiratory diseases, onion itself has the effect of inhibiting asthma, can make the tracheal spasm significantly relieved, especially in the early onset, for the respiratory tract, onion has the effect of calming it. 2, onion boiled water can treat inflammation, mostly seen in the inflammation of the upper respiratory tract or otitis media and other superficial inflammation. 3, Onion boiled water can treat indigestion, especially can regulate the function of the spleen and stomach. Onion itself has a strong stimulating properties for the stomach, intestines and other digestive tract, can promote the secretion of its digestive juices, improve the dynamics of digestion, which can increase appetite and promote digestion.