Pig tail has the effect of strengthening waist strength and benefiting bone marrow. Cooking soup with pig's tail and coccygeal vertebrae has the effects of nourishing yin and replenishing marrow, improving backache and preventing osteoporosis; During the development of teenagers and men, it can promote bone development, and middle-aged and elderly people can delay bone aging and premature aging. Folk use it to treat enuresis. Pig tail is rich in gum and has a good cosmetic effect.