The colonoscopy should not be performed on the last day of menstruation. When performing the colonoscopy, try to choose to perform it after the menstruation has been cleaned up for about 7 days, but not on the last day of menstruation. On this day, the menstruation is not completely clean, and the immunity of women’s body is relatively low, so colonoscopy in this state will cause irritation to women’s reproductive organs, and even induce gynecological diseases. Colonoscopy needs to be placed through the anus into the endoscope, and the anus and female vagina is relatively close, in the process of examination of dirt will inevitably cause contact with the vagina, and in the last day of menstruation, the vaginal system’s immune system has not been fully restored, this day to check the colonoscopy is more likely to lead to vaginitis disease. After the colonoscopy, should also do a good job of local hygiene care, appropriate rest, maintain a good mood, in order to avoid affecting the intestinal mucosa inflammation subside.