Bleeding on the second day of intercourse is also known as contact bleeding. The main reasons for contact bleeding are: First, the local inflammation of the vagina caused by coitus skin and mucous membrane damage caused by bleeding. Second, vaginal polyps or localized cervical polyps will also bleed after contact. Third, cervical cancer or localized cervical lesions can also lead to bleeding after contact, so it is recommended that this situation, must pay great attention to go to the hospital to do gynecological examination to understand the parts of the bleeding, if there is a fatty organisms to give timely surgical excision. For the cervix, it is best to do cervical cancer screening to find out whether there is a possibility of localized epithelial lesions, and then give the necessary treatment according to the results.