Cleaning a little blood after each coitus may be caused by vaginal mucous membrane damage, cervical lesions, uterine lesions, etc., and should go to the hospital in time. 1. Vaginal mucous membrane damage: If the coitus time is too long, too frequent, too intense or improper posture, may make the vaginal mucous membrane damage caused by bleeding, should be appropriate rest, to avoid infection, generally do not need special treatment. 2. Cervical lesions: Cervical lesions such as cervical polyps, pre-cancerous cervical lesions or cervical cancer are typical diseases that cause bleeding after coitus, so you should go to the hospital for gynecological examination in time, and complete the examination such as HPV and cervical TCT, to clarify the cause of the disease, and then proceed to the next step of treatment under the guidance of the doctor. 3. Uterine lesions: Uterine lesions such as uterine fibroids may also cause bleeding after intercourse, if there is bleeding after each intercourse, you should go to the hospital in time, complete the examination under the guidance of the doctor, and carry out medication or surgical treatment after a clear diagnosis. After intercourse, you should pay attention to observe your own physical condition, if there is bleeding after intercourse, lower abdominal pain and other symptoms, it is recommended that you consult a doctor in time for gynecological examinations such as HPV and cervical TCT to avoid delaying the condition.