Hello! Vaginal relaxation itself is not a disease, but a manifestation of female pelvic floor dysfunction. However, it should be emphasized that vaginal relaxation is not a disease, but if women do not pay attention to it and do not receive standardized diagnosis and treatment as soon as possible, it will seriously reduce the quality of husband and wife's sexual life and increase the risk of gynecological diseases such as vaginitis. Generally speaking, patients with mild relaxation can be tightened through self-rehabilitation exercise or minimally invasive surgery; For patients with severe relaxation, it is suggested that vaginal contraction can be used for treatment. Six-day biological band tightening was created by the team of plastic surgery and pelvic floor repair experts of Peking Union Medical College Hospital through two years of clinical application, combined with modern minimally invasive surgery concepts and regenerative tissue engineering materials (acellular allogenic dermis -HADM biological band developed and produced by Beijing Jieyalaifu). In this operation, the self-patented puncture guide hook was used, and the HADM biological belt was implanted between the vaginal side wall and the posterior wall in a bi-directional semi-circular manner. The good mechanical properties of HADM biological belt are used to control the lifting of ligaments and muscles to appropriate positions, and the regenerative function of HADM biological belt is used to promote the permanent reduction of loose tissues, so as to realize the non-invasive contraction of vaginal cavity and vaginal orifice.