Water ballet is a commercial name called autogenous collagen regeneration technology. With the help of special hydrodynamics and tension characteristics of water needle and physiological saline, it acts on fascia layer, from single point to line, and finally forms reticular exfoliation cortex, which reactivates skin tissue after minimally invasive surgery. In the process of regeneration, a large number of self-derived nutrients will be produced, and various growth factors, collagen and fibroelastin tend to be vigorous, thus achieving the effect of tissue regeneration and repair. Its outstanding technical advantages are mainly