A vaginal exam endoscope does not have to be inserted anywhere, and can usually be viewed just outside the vaginal opening. However, when doing a colposcopy, a vaginal speculum needs to be inserted into the vagina so that the vaginal part of the cervix can be exposed. Vaginal examination endoscope should actually refer to the colposcope, which is a binocular extracorporeal magnifying glass optical speculum that can optically magnify the fully exposed vagina and cervix by 5 to 40 times, directly observe the vascular morphology and epithelial structure of these areas, determine whether there are malignant lesions, and perform a targeted biopsy of the suspected area. Before doing colposcopy, it is important to make sure that there is no acute and subacute inflammation of the reproductive tract, and no intravaginal medication, no douching of the vagina, and no sexual intercourse for 24 hours before the examination. To do a colposcopy, you need to first use a vaginal speculum inserted into the vagina to expose the cervicovaginal part. The colposcope objective is about 15-20 centimeters away from the vaginal opening, aligned with the cervix or lesion, turn on the light source for observation, and do the acetic acid test and iodine test. If any abnormality is found, a biopsy is taken from the area with the abnormal image of the acetic acid test and iodine test or from the area of the suspected lesion for pathologic examination.