There are two types of bleeding after intercourse: 1. Contact bleeding refers to bleeding that occurs after intercourse or after gynecological examination when the patient’s cervix or vagina is touched, which is usually considered to have local lesions of the cervix or vagina, such as inflammation, intraepithelial neoplasia or cancer or polyps. These lesions can lead to an increase in the fragility of the cervical or vaginal tissues and the exudation of inflammatory mediators or red or white blood cells, which can easily cause blood vessels to rupture and bleed when touched during intercourse. Patients with this condition must undergo gynecological examination and if necessary, TCT, HPV, colposcopy, cervical or vaginal biopsy is needed to clarify the diagnosis.2. Consider patients with endometrial polyps, endometrial tumors, ovulatory bleeding or bleeding before or after menstruation, bleeding though occurs after intercourse and has little to do with intercourse. When doing gynecological examination, it is seen that the patient’s vaginal bleeding is from the uterine cavity, and the patient will still have bleeding in the vagina after intercourse. The diagnosis can be clearly made by doing gynecological ultrasound, hysteroscopy, tumor markers and other related examinations.