Squamous carcinoma is the abbreviation of squamous cell carcinoma, which refers to malignant tumors that are malignant on the basis of squamous epithelium. The severity of squamous carcinoma is related to the tumor size, stage, growth location and spread degree, so squamous carcinoma is not necessarily a less serious cancer. Patients are advised to actively cooperate with the treatment to achieve a good prognosis. If the size of squamous carcinoma is small, the disease is generally controllable and the lesion can be removed by surgery, which usually does not compress the nerves and blood vessel travel and does not affect the physiological function. However, if the cancer is larger in size, it may not be surgically removed due to poor growth location, lymph nodes or distant metastasis, and the disease is more serious at that time, and medication may be needed to slow down the development of cancer. In addition, in terms of squamous carcinoma stage, carcinoma in situ has a better prognosis because it has not spread and is mostly not accompanied by other symptoms. If the squamous carcinoma is limited and the stage is early, it can be surgically removed radically. However, if the treatment effect is not good and the cancer grows and gradually infiltrates the surrounding tissues, or even metastasizes to lymph nodes and distant organs along blood vessels and lymph, then the stage of squamous carcinoma is late and it is more serious. Squamous carcinoma mostly occurs in skin, oral cavity, throat, esophagus and reproductive system etc. Most of them are cauliflower shaped and easily accompanied by ulcers due to ischemic necrosis of tumor. Therefore, patients should actively cooperate with the treatment after diagnosis. The 5-year survival rate after early treatment is relatively high and the prognosis is better. For mid- to late-stage squamous carcinoma, with radiotherapy and other treatments, patients’ survival quality can be improved and survival time prolonged.