Growth factors are cytokines that have the activity of stimulating cell growth, or active proteins and peptides that have a wide range of regulatory effects on the growth and development of organisms. Common growth factors include epidermal growth factor, nerve growth factor and so on. Different growth factors have different effects. Epidermal growth factor plays an important role in regulating cell growth, proliferation and differentiation. Nerve growth factor can promote the growth, development, differentiation and maturation of central and peripheral neurons and maintain the normal function of the nervous system. In addition, insulin can promote the synthesis of body fat and protein and inhibit their breakdown. Growth factors are widely used in the field of medicine, such as the repair of burns, burns, ulcers, etc. in the clinic, as well as the treatment of tumors, cardiovascular diseases and other diseases. The use of growth factor drugs should be under the guidance of a doctor, do not blindly self-medication to avoid adverse reactions.