You should not have intercourse within one day after using the shrinkage ball. The shrinkage ball should be put into the vagina with appropriate shrinkage exercises to help the vagina become tighter, and after taking out the shrinkage ball, you should pay attention to local cleaning to keep the local area clean and dry. If you have intercourse within one day after using the ball, the vagina will become dry when you use the ball, which will increase the friction during intercourse and affect the therapeutic effect of the ball, and will aggravate the symptoms of vaginal laxity. When you have intercourse after a day of using the ball, you should pay attention to the position, strength and time of intercourse to avoid aggravating the vaginal laxity. It takes a few months to treat vaginal laxity with shrinkage balls, the treatment time is relatively long, and it is recommended to control the number of sexual intercourse during the treatment period to improve the treatment effect. If the effect of vaginal reduction ball treatment is not satisfactory, it is recommended to consider vaginal tightening.