Scallion white as a traditional Chinese medicine, its flavor is pungent, warm, with sweating, through the efficacy of the yangqi, for the exterior of the wind cold, the Yin cold inside have a role in regulating the general can be used to decoct the soup or porridge food, but also can be used externally, appropriate amount of pounding, or decoction of the water to wash. If it is boiled water, you can cook a little longer, so that the pharmacological composition of the white onion more dissolved in water, it is recommended that the water boiled and boiled for about 10 to 15 minutes is appropriate.