There are several reasons for pain inside the vagina: first, because of gynecological inflammation, such as common vaginitis, pelvic inflammatory disease, endometritis and other diseases can lead to pain inside the vagina, among which the most direct cause is vaginitis, other are indirect diseases that lead to pain inside the vagina, the main reason is that the exudate or secretion of inflammation can stimulate the mucosal sensory nerves in the inner wall of the vagina, through the afferent nerve Secondly, for older women, if pain inside the vagina occurs, malignant tumors should be excluded, such as endometrial cancer, cervical cancer, mucinous sarcoma of the uterus and other abnormal growths can indirectly press or stimulate the sensory nerves of the vagina, thus producing painful symptoms inside the vagina; thirdly, for women with multiple sexual partners, consideration should be given to whether there are Sexually transmitted diseases such as syphilis and AIDS can cause pain in the vagina. Therefore, it is important to go to the gynecology department of the hospital to find out the cause of the pain inside the vagina and to treat the problem.