You can do the following methods to shrink your vagina: 1. You can do the action of shrinking your vagina, that is, lifting the anus, contracting it for 10-15 seconds and relaxing it for 30 seconds for 5-10 minutes, once in the morning and once in the evening, which will increase the function of the pelvic floor muscle and tighten the vagina; 2. If the vagina is too loose and it affects urination and defecation, you can also go to the hospital for vaginal wall repair surgery. Women are prone to pelvic floor muscle laxity due to physiological structure and childbirth, so it is important to avoid excessive weight bearing and actively treat diseases that increase abdominal pressure, such as chronic constipation and coughing.