Colposcopy can see advanced lesions. The examination of colposcopy is usually able to see the degree of cervical lesions, and advanced lesions should be treated promptly after the examination, and the menstrual period should also be avoided before the examination. Colposcopy is a commonly used examination in obstetrics and gynecology. Colposcopy can observe lesions of the vaginal cervical epithelium, and it can observe lesions that cannot be seen with the naked eye, so colposcopy can view low-grade lesions and high-grade lesions, and it is also an important means of screening for cervical cancer. When high grade lesions are detected, they should be treated actively. High grade lesions are pre-cancerous lesions, and early treatment can prevent them from developing into invasive cancer. Generally speaking, doctors will recommend cervical conization surgery to remove the diseased tissues to avoid cancerous changes, and it is also necessary to choose a regular hospital for the surgical treatment. Before colposcopy, you should pay attention to avoid coitus, and also pay attention to avoid using medication in the vagina and avoid the examination during menstruation, so as not to affect the result of the examination. After the examination, it is necessary to pay attention to maintaining personal hygiene and avoid taking a basin bath.