Studies also show that Allium chinense has many physiological functions. Shantou is known as "Ganoderma lucidum in Chinese cuisine". For Chinese medicine, many components contained in Allium chinense have a good therapeutic or auxiliary effect on coronary heart disease, angina pectoris, gastric neurosis, gastroenteritis, retching, chronic bronchitis, wheezing, cough, chest pain, chronic dysentery, cold diarrhea and so on. It can be seen that leek is indeed a treasure with the same origin of medicine and food, and it deserves the reputation of "Ganoderma lucidum in vegetables". Green onions can be processed into salted green onions and sweet and sour green onions by pickling, sweet and sour pickling and other methods. This product has a unique color and fragrance, and it is a very unique seasoning food. It has the functions of "stimulating appetite, helping digestion, relieving exterior syndrome, promoting qi circulation, and strengthening spleen and stomach". Commonly known as "eat six pills before and after meals, and don't hit the doctor in front of the door", which vividly describes the medical and health care value of green onions. With the continuous improvement of modern detection methods, mature onion contains many nutrients such as sugar, protein, calcium, phosphorus, iron, carotene and vitamin C (see Table 2)[2], and the nutritional components of onion in different regions are slightly different. Table 2. Table 2. Nutrient components of leek and leek from different places (per100g edible part). Nutritional components of taro and leek from different habitats.