If there is bleeding and pain after each intercourse. The first reason is most often caused by damage to the vaginal mucosa, which not only causes bleeding but also localized pain. The second reason is that there is inflammation in the vagina and friction during intercourse aggravates the local inflammation, so there is pain. Due to the inflammation, the mucous membrane will be relatively brittle, which will lead to local breakage, so bleeding will occur. The third reason is caused by cervical cancer. When cervical cancer is in its early stage, bleeding will occur during intercourse, but since the cervix is locally innervated by the vegetative nerves, even if it is bleeding, it will not cause pain clinically, but it is recommended to do cervical cancer screening to find out whether there is already a lesion in the cervical epithelium, and if there is any problem, deal with it in time.