SCC refers to squamous carcinoma antigen, with a normal value usually at 2.5 μg/L. SCC is a tumor marker that is primarily used to diagnose squamous cervical cancer. SCC is significantly elevated in the presence of squamous cervical cancer. An elevated SCC indicates the possibility of not only cervical cancer, but also head and neck cancer or lung cancer. Liver disease, lung disease, kidney disease, etc., may also cause a certain degree of SCC elevation. Therefore, the diagnosis of squamous cervical cancer cannot be made simply from the elevation of SCC, but requires a combination of clinical symptoms and further tests. Squamous cervical cancer usually manifests clinically as painful menstruation, excessive menstrual flow or abnormal menstruation. If these clinical symptoms are combined with elevated SCC, further pathological examination is needed to confirm whether cancer is present so that early surgery can be performed.