What is a biological patch? According to experts, the regenerated biological patch is extracted from natural organisms through a series of advanced technologies such as cross-linking fixation and multi-directional antigen removal, which can be understood as a cell scaffold. According to the principles of regenerative medicine, molecular biology and immunology, it can play a good role as a scaffold to fill the missing tissues in the damaged parts. Under the induction of this material, the self-repair function of human body can gradually grow new tissues in the original position, replacing biomaterials and completing organ tissue regeneration. In the early stage, it was mainly used in neurosurgery, meningeal repair, esophageal cancer repair after resection, skin and pleura repair after conjoined baby incision, gynecology, andrology, lung cancer, tumor and so on. And rescue patients with extensive burns, but now it is beginning to explore its application in the field of plastic surgery.