Cervical biopsy before the examination of four is a rapid four check, including syphilis, hepatitis C, hepatitis B, AIDS and other infectious diseases. Because the cervical biopsy to take the living tissue of the cervix for examination, so the preoperative to understand whether the patient has infectious diseases, you can carry out symptomatic disinfection treatment, but also to the patient’s own responsibility for a check. If there is no abnormality in the preoperative examination of infectious diseases, biopsies can be taken from 4 points of the cervix, such as 3, 6, 9, 12, etc., under colposcopy for routine examination. If the patient’s cervical transformation zone is type 3, but also for cervical tube scraping, the removed tissue sent to the pathology for further clarification of the diagnosis, according to the results of the examination of the symptomatic to give effective treatment.