There is a procedure during colposcopy that involves applying acetic acid to the cervical epithelium. If a thin white acetate epithelium is present, it is more likely to indicate clinically that there is no lesion in the area. The presence of thicker white acetic acid epithelium with clear borders overwhelmingly indicates the possibility of cervical epithelial lesions in the area. For example, low-grade lesions and high-grade lesions need to be biopsied here, and the biopsies taken out will be sent for pathological examination, and the final pathological diagnosis will prevail. It is recommended that women should be screened for cervical cancer once a year. If there are any abnormalities in the screening for cervical cancer or if there is a high-risk HPV infection, colposcopy should be done and the need for biopsy should be decided based on the results of the colposcopy. The biopsy will be sent for pathological examination, which is the final clinical diagnosis.