When a girl has vaginal bleeding after masturbation, there is no need to be nervous. If the amount of bleeding is relatively small, it is advisable to keep the area clean, wash the vulva with cleanser, change the sanitary napkin regularly and observe the amount of vaginal bleeding, if the amount of vaginal bleeding is still small, most of it will stop soon and no other intervention is needed. However, if the amount of bleeding is relatively large and fresh, and there is no symptom of stopping the bleeding, it is advisable to go to the hospital for a corresponding examination. It is possible that the vaginal mucosa has been damaged during masturbation, resulting in the rupture of large blood vessels, so there will be more bleeding, and it may be necessary to give stitches to stop the bleeding.