It is normal to have squamous cells in cervical examination, there are two types of cells in the cervical area, columnar epithelial cells and squamous epithelial cells, if the report is atypical squamous cells which cannot be clearly understood, it should be taken seriously and should be analyzed in combination with HPV results and colposcopic biopsy if necessary. It is a group of precancerous lesions that often occurs in women between the ages of 25-35. The outcome of cervical intraepithelial neoplasia is mainly the spontaneous regression of the lesion, which rarely progresses to invasive cancer; the lesion has precancerous potential and may develop into invasive cancer. The main clinical manifestations are increased vaginal discharge with or without odor, the possibility of contact bleeding can occur, and some patients have no specific symptoms. The treatment is mainly cryotherapy and laser treatment, and surgery is needed if necessary, and regular review is required.