The pelvic muscles refer to the muscle group that closes the pelvic floor. This muscle group is like a "hanging net" that tightly holds the urethra, bladder, vagina, uterus, rectum and other organs in their normal positions so that they can function. Once the elasticity of this "net" deteriorates and the "hanging force" is insufficient, the organs in the "net" will not be able to maintain their normal positions, resulting in corresponding functional disorders.