Squamous cell metaplasia refers to localized squamous epithelial metaplasia,localized squamous epithelial hyperplasia, indicating a low grade squamous intraepithelial lesion level with the possibility of precancerous lesions. It is a cytologic test, so it does not represent the entire histology of the cervix. What are the differential diagnoses required for squamous cell metaplasia? 1. Endocervicitis: Inflammatory lesions of the uterine cervix confined to the endocervical canal are extremely rare. The appearance of the cervix in both is extremely smooth, but in the latter, purulent mucus plugs can be seen at the outer mouth of the cervical canal, while in those who develop cervicitis from acute vaginitis extending to the cervix, the cervical canal mucus remains clear and transparent despite obvious vaginal inflammation. 2. Cervical erosion: It must be distinguished from early cervical cancer, which is generally hard and brittle in texture and bleeds very easily, while cervical erosion is softer and more lubricated, and although it has a tendency to bleed, it is only stained with blood on the fingertips after examination and touching. However, most early cervical cancers cannot be clinically distinguished from celiac disease without the help of other diagnostic methods. Therefore, all patients with cervical erosion should be routinely examined by cervical scraping to find cancer cells, and if necessary, biopsy should be performed under colposcopy (detailed gynecological disease diagnostics). 3. Chronic cervicitis: It is a disease that is easily ignored by women because of its strong concealment and not easily detected by everyone. In fact, chronic cervicitis generally does not pose much of a health risk when it is simply suffered. However, often the symptoms such as increased leucorrhea, back pain and lower abdominal cramping due to chronic cervicitis can affect a person’s mood.