Vaginal bleeding should not occur after 20 days of cervical biopsy. If the patient has vaginal bleeding, there are three main possibilities to consider: first, the patient has a lesion of the cervix itself, such as cervical cancer, intraepithelial neoplasia of the cervix, etc. The cervical biopsy is 20 days old and the results of the cervical biopsy are already available. If it is caused by a lesion, it can be treated surgically depending on the lesion. Second, consider the patient’s long bleeding time caused by traumatic infection after cervical biopsy. The patient also has clinical symptoms such as pain and discomfort in the small abdomen, bleeding with foul odor and low fever. By doing internal gynecological examination, a clear diagnosis can be made and anti-inflammatory plus hemostatic treatment can be given. Third, consider bleeding caused by abnormalities in the uterine cavity after the patient’s cervical biopsy. For example, endometrial lesions, irregular menstruation, adenomyosis, etc. Patients who have gynecological internal examination can observe that the bleeding is not from the cervix but from the uterine cavity. According to other clinical symptoms and signs of the patient, further examination is needed to find out the cause and treat it symptomatically.