Onion white, ginger belongs to the same source of medicine and food, the efficacy and effect of onion white ginger water is sweating to relieve the surface (through sweating to relieve the body surface of the evil), warm to stop vomiting and so on. However, the effect is limited, generally not up to the therapeutic effect. Scallion white, with sweating and relieving the surface, dispersing cold and Yang effect. It is mainly used for treating wind-cold and flu, and yin-sheng and yang-sheng. It should be taken with caution for those who suffer from superficial deficiency and excessive sweating. Ginger has the efficacy of relieving cold from the surface of the body, warming the spleen and stomach to stop vomiting, warming the lungs to stop coughing and detoxifying the toxin. It is mainly used for treating wind-cold flu, cold spleen and stomach, cold stomach and vomiting, cold lung and cough, and also detoxifying fish and crab. Heat and Yin deficiency of internal heaters should not be served. Onion white ginger water after drinking if there is discomfort recommended to stop in time, timely medical attention.