Electronic colposcopy is a technology widely used in clinical practice to screen for cervical disease. It combines an electronic computer with an optical colposcope to magnify tissue areas lO-50 times, greatly improving resolution and revealing even the smallest areas that cannot be observed with the naked eye. The gynecologist can understand in detail the early lesions in the junction area of the squamous and columnar epithelium of the cervix and can accurately locate and take biopsies of the smallest parts of the lesions. When direct identification of the cervical epidermis and vascular run cannot be performed, acetic acid or compound iodine solution can be used for wiping as appropriate. The accuracy of the test is improved by identifying the lesion site based on the abnormalities of the white epithelium and blood vessels in acetic acid (a characteristic manifestation of precancerous cervical lesions). And because colposcopy is non-invasive, it can be repeatedly detected and localized biopsy is performed, which reduces the blindness of pathological examination, improves the accuracy of pathological biopsy, greatly reduces the pain of patients, is more popular, provides an important basis for early diagnosis of cervical lesions, and is one of the important means to prevent cervical cancer.