Left lung squamous carcinoma is a relatively serious disease, because this disease not only brings pain to patients and reduces the quality of their survival, but also affects the survival period of patients, and may even jeopardize the life safety of patients and lead to their death. Left lung squamous carcinoma is a kind of clinically common malignant tumor disease that occurs in the left lung. Due to the spread of left lung squamous carcinoma, patients may suffer from hemoptysis, cough, fever, chest pain, dyspnea, headache, abdominal pain, abdominal distension and other symptoms, which bring great pain to the patients and reduce their quality of life. If left lung squamous carcinoma develops to the advanced stage, due to extensive spreading, it will lead to the failure of lungs, heart and other important organs, so that the survival period of left lung squamous carcinoma patients will be shortened significantly due to the failure of multiple organs, and even lead to the death of the patients, thus the disease is more serious.