From the anatomical structure of the human pelvic floor, the vaginal cavity is mainly composed of muscles and related ligaments. Weak or insufficient sphincter around vagina will lead to enlargement of vaginal cavity and relaxation of vulva. Vaginal relaxation is easy to infect all kinds of bacteria, which will lead to some gynecological diseases. At the same time, long-term relaxation will also lead to low quality of sexual life and the problem of bulging front and rear walls. At present, the problem of vaginal relaxation can be improved and treated by surgery or exercise. Minimally invasive surgery -3D biological belt tightening of private parts is mainly for patients with mild to moderate relaxation, mainly for vaginal cavity and vaginal orifice tightening. The tightening of private parts of 3D biological belt is mainly implanted in the posterior vaginal sphincter and vaginal orifice, which establishes ligaments for the relaxed sphincter and vaginal orifice, restores the elasticity of sphincter and enhances muscle strength, thus achieving effective vaginal tightening. If it is more than severe relaxation, traditional posterior wall compression surgery can be used for compression. It takes 2-3 months to recover after the operation, and then the sexual life will have a firming effect. You can go to gynecological clinics or gynecological hospitals and plastic surgery institutions.