The reason why there is contact bleeding is mainly due to the following reasons: 1. Chronic inflammation of the cervix itself, most commonly the local formation of polyps, which are relatively brittle and cause bleeding due to rupture of capillaries on the surface after contact. However, the bleeding is often bright red. 2. If there is inflammation on the surface of the cervix, the epidermis is slightly broken after contact and very little bleeding occurs, showing that the discharge is pink. 3. The appearance of contact bleeding is also common in the manifestation of early cervical cancer, so no matter what color the bleeding is, as long as there is bleeding, it is recommended to do cervical cancer screening.