Squamous cell carcinoma, also known as squamous carcinoma, is a malignant tumor that originates from the epidermis or skin appendages. The sites of onset are mostly found in the skin and oral cavity, but also in the bronchus, renal pelvis and bladder, etc. According to the degree of malignancy of tumor cells, they can be classified as highly differentiated, moderately differentiated and poorly differentiated. Hypofractionated squamous carcinoma is more malignant and invades the surrounding tissues severely, and metastasis can appear at an early stage. Patients with squamous cell carcinoma are recommended to actively seek medical consultation and undergo comprehensive treatment with the help of doctors.