Squamous cell carcinoma generally refers to pathologically squamous carcinoma. Depending on the location, the main treatment may still be surgical radical treatment, and then surgery followed by radiotherapy and chemotherapy, such as esophageal squamous carcinoma and lung squamous carcinoma. If the stage belongs to early or middle stage, radical treatment of esophageal cancer or radical treatment of lung cancer is needed, and then adjuvant radiotherapy and chemotherapy after surgery. Some parts of squamous cell carcinoma may not be operated or may be very difficult to operate. For example, squamous cell carcinoma of the nasopharynx can be diagnosed through nasopharyngeal microscopy and pathological examination. Most of them may also belong to the low-differentiated squamous carcinoma or undifferentiated squamous carcinoma, which has a very high malignancy. Moreover, it is very difficult to operate on this part of the nasopharynx and is prone to residual and recurrence. Generally, the main treatment for nasopharyngeal squamous carcinoma is radiotherapy, which can be accompanied by chemotherapy.