Xianjie Ma graduated from the Fourth Military Medical University in 1986 and received his master's and doctor's degrees. Currently, he is chief orthopedic surgeon, professor and doctoral supervisor at Xijing Hospital, Xi'an Fourth Military Medical University. He has been engaged in plastic surgery for 30 years and has rich clinical experience in plastic surgery and cosmetic surgery. In recent years, he has carried out a series of clinical studies on skin soft tissue expansion and hypertrophic scar treatment. In addition, he also carried out a series of basic research, further revealing the mechanism of skin soft tissue expansion to promote skin regeneration. He won one first prize and one third prize in the national Science and Technology Progress, one first prize and one second prize for Shaanxi Province Science and Technology Progress.