If a woman has abnormal bleeding during intercourse, she should go to the hospital in time for a detailed physical examination, and actively intervene in the treatment of the disease if it exists, and generally cannot have intercourse during the treatment of the disease. The cause of bleeding after intercourse may be related to the presence of gynecological diseases such as cervical erosion, cervical polyps, cervical cancer, etc. During intercourse, the cervix is stimulated, resulting in abnormal bleeding. In the presence of disease, coitus will aggravate the condition and affect the treatment effect, so it is recommended that coitus is strictly prohibited during the treatment of the disease. Abnormal bleeding during coitus alone can not accurately determine the cause of the disease, but also need to be combined with the characteristics of the medical history, other test results to make an accurate judgment, it is recommended to clarify the cause of the disease under the guidance of a doctor.