A light pink discharge after intercourse may be abnormal vaginal bleeding. In this case, the first thing to rule out is the following causes: first, there is chronic vaginitis or inflammation of the cervix, which can be detected by routine white belt examination, and vaginal examination. If there is cervicitis, there may be a little bleeding because of the stimulation of intercourse. The second, to rule out any cervical redundancy, the most common redundancy is cervical polyps. If there is, cervical polyp removal should be performed. In the third case, if there is precancerous cervical lesion or cervical cancer, there will be bleeding after intercourse. Because the most early clinical manifestation of cervical cancer is vaginal bleeding after intercourse. At this time, you can go to the hospital for cervical cancer screening to see if there are precancerous lesions. If there are precancerous lesions, further lip knife surgery, or cold knife surgery is required. If it has already become cervical cancer, further enlarged surgery will be performed.