Shallot is an essential condiment in our kitchen, it is pungent and flavorful and has an important role in cooking. Traditional Chinese Medicine (TCM) originates from daily life, and shallot is also a traditional Chinese medicine that can treat many diseases. In TCM, the medicinal part of scallion is scallion white, which is the whitish part of scallion near the root. It is pungent in flavor and warm in nature. It belongs to the lung and stomach meridians. The pungent flavor can disperse and move. It has the effect of moving qi. We also have a personal experience in frying vegetables, cut onion sometimes spicy flavor makes us tears, that is, its pungent role, warm nature that can disperse cold, in the clinical have many uses. Onion can sweat the surface, dispersing cold and Yang, can treat colds belonging to the wind-cold evidence of the person. Colds are broadly categorized as wind-cold, wind-heat, summer-dampness, and external deficiency, such as qi deficiency, blood deficiency, yang deficiency, and yin deficiency. Wind-cold cold manifests itself in the form of fear of cold and fever at the same time, fear of cold is heavier than fever; fever but no sweating, headache, sneezing, runny nose and other symptoms. Scallion white is calm in nature and is suitable for people with mild wind-cold flu. Onion white in ancient times can also be used for first aid. Onion white, especially the growth of many years of pungent old onion, is the death of yang evidence of ancient rescue in a very important medicine. Onion white can promote yang qi, warm and dissipate cold qi. Onion tube up and down, the ancients take analogies, associations, it can communicate has been isolated in the upper and lower yin and yang qi, so that the dead off the yang qi back to the body. The death of yang evidence is a critical condition of the human body, is the human body because of the evil victory is weak, weak yang, yang loss of evidence, manifested as profuse sweating, cold hands and feet, weak pulse, onion white with the great XinDaHe of appendicitis, as well as warming and dispersal of cold GanZiang, in the ancestor of the “Treatise on Cold and Typhoid Fever” in the formula known as the “white through the soup”. White is the original color of green onion white, through the meaning of warming the meridians and Yang, is a common formula for first aid in ancient times. The insignificant condiments in life, in the hands of Chinese medicine played a huge role, enough to see our ancient working people’s hard work and wisdom and the courage to fight with the disease and practice. Chinese medicine is a national treasure, we should inherit and carry forward the profound culture of Chinese medicine. Onion in the ancient medical books there are many roles, the next issue we come together to understand.