Vaginal speculum examination is colposcopy, which is used to understand the cervical disease a common examination method, vaginal speculum examination method is the patient empty bladder, take the bladder stone position, the examiner disinfects the patient’s vulva, lubricate the speculum, and then use the speculum to open up the vagina, fully expose the cervix and vagina. The appearance of the cervix is observed under colposcopy, and then acetic acid or iodine is applied to the surface of the cervix to observe the color change of the cervix after the application of color. If acetic acid test is performed and there is a vinegar-white epithelium, it indicates that the cervix may have lesions. If there is cervical staining abnormality after applying complex iodine, it means that this cervix is diseased. Tissue can be taken from the suspected lesion area for pathological examination under colposcopy, which is very meaningful for diagnosing cervical diseases.