Skin is an organ of the human body, composed of many kinds of tissues, such as epithelial tissue and the following connective tissue, nerve tissue, these tissues are arranged in an orderly manner to form the skin with a variety of functions of the organ, is a very safe natural protective barrier for the human body, able to resist the invasion of various types of germs, and at the same time, has the function of secretion of sweat, excretion, heat dissipation. Once the skin is damaged, a variety of lesions are likely to occur, such as infection can cause inflammatory changes in the skin, allergies can cause wind-blocking changes, eating too greasy food can cause excessive sebaceous gland secretion changes, atypical hyperplasia of the skin tissue cells can cause pathological changes in skin cancer. Pay attention to the care of the skin to prevent the appearance of skin diseases.