After the end of menstruation and then bleeding, the most important consideration is the following three cases: first, the main consideration is normal menstrual blood, this situation is mainly because the menstruation has just ended, the uterine cavity there is a small amount of endometrial stripping and bleeding, but the amount of bleeding is very small. If there is no sexual intercourse, it can be absorbed locally and will not flow out of the body. If under the mechanical stimulation of sexual intercourse, it is possible that this blood will be discharged out of the body. This situation is mostly without discomfort and does not require treatment. Second, the main consideration may be cervical lesions, such as cervical inflammatory diseases, cervical intraepithelial neoplasia or cervical cancer. The chances of this happening are very high, so when contact bleeding occurs, gynecological internal examination and cervical cancer screening must be done. Its main screening is TCT and HPV, and the next step of examination and treatment will be determined according to the screening results. Thirdly, it is necessary to consider other lesions causing the bleeding, such as uterine polyps and lesions of pancreatic B. Therefore, it is necessary to carry out differential diagnosis through gynecological internal examination and gynecological ultrasound, and determine the next step of examination and treatment according to the results of these examinations.