Some patients think that negative three-dimensional color ultrasound can replace gynecological examination. This is a misunderstanding of patients, many patients actively request for negative 3D color ultrasound examination, but do not agree to the routine gynecological examination, thinking that negative 3D color ultrasound examination can replace the gynecological examination. Negative 3D color ultrasound is one of the most important means for the examination of tumors on the uterus, cervix and ovaries, but its diagnostic significance for cervical and vaginal lesions is more limited. It is meaningless for cervical cancer screening.