Repair and reconstruction surgery is to repair and reconstruct the defects and deformities of human tissues and organs by means of surgery or tissue transplantation, as well as to reshape the normal human body, so as to achieve the improvement and beautification of the form and reconstruction of the function. After treatment, patients with tissues, organs and deformities caused by diseases, traumas or congenital malformations can achieve the goal of “no disability for the injured and no disability for the disabled”. (I) Repair of traumatic defects and deformities Due to mechanical, chemical, temperature, radiation and other factors, the form and function of human tissues and organs are damaged, such as burns, electric shocks, frostbite, firearm injuries, cuts, avulsion injuries, crush injuries, radiological injuries, etc. caused by the face, trunk and limbs of the tissues or organs of the defects and leftover keloidal deformities, for this kind of defects and deformities, not only can be used to transplant the tissues for later repair, but also in the early stage of traumatic injury, the tissue transplantation can be used for later repair. For this kind of defects and deformities, not only can tissue transplantation be used for later repair, but also in the early stage of trauma, if plastic surgery can be used to repair the wound in time, it can promote early healing, shorten the course of treatment, prevent and reduce the occurrence of later deformities. (B) congenital malformation defects and deformities of plastic surgery congenital defects and deformities refers to the body’s tissues, organs in the process of fetal development, or in the growth of morphological or (and) functional defects. Repair and reconstruction surgery mainly affects the appearance and function of the body surface deformities, such as craniomaxillofacial deformities, cleft lip, cleft palate, microtia, nasal deformities, chest and abdominal wall deformities, urogenital defects and deformities, as well as upper and lower limb deformities. (iii) Plastic surgery for infectious defects and deformities Bacterial, viral and other microbial infections can cause tissue necrosis, residual defects and scar deformities. Including the plastic surgery of noma, the sequelae of serious infection of skin and subcutaneous tissue, the plastic surgery of infected fistula and noma ulcer as well as the treatment of elephantiasis of lower limbs, penis and scrotum. (D) Repair of defects after resection of various benign and malignant tumors, such as large nevus, lymphangioma, hemangioma, vascular and lymphatic malformations, neurofibroma, melanoma, skin cancer, sarcoma, and reconstruction of breast tumors after resection. Especially for the tumors occurring in the face, chest, abdomen and genitals, it is more necessary to use the method of repair and reconstruction to repair or reconstruct the function and appearance after resection. (E) some diseases caused by human tissue and organ deformities, defects or dysfunction of plastic such as facial nerve paralysis plastic, ptosis, palmar tendon contracture, hemifacial atrophy, breast ptosis, breasts plastic. Repair and reconstruction surgery is both a medical science and an art, which can relieve the patient’s pain and make the human body defective or lost organs to restore the shape and function.