Back pain is not necessarily lung cancer, it is not possible to determine that the patient has lung cancer based on the symptom of back pain, and it is suggested that the patient should take into account the clinical symptoms of lung cancer as well as the relevant examinations to determine the cause of the disease. Back pain is not a typical symptom of lung cancer, and back pain is not necessarily caused by lung cancer. Patients with lung cancer may have paroxysmal irritating dry cough, and if cancer cells invade neighboring organs and tissues, they may have irregular pain in the chest, which is aggravated when coughing. With the development of the disease, patients may have hoarseness, headache, nausea, difficulty in swallowing and other symptoms. To confirm the cause of the disease, patients can undergo chest X-ray examination, CT examination, endoscopy, pathology examination, blood routine, liver and kidney function tests, etc., so that it can be clarified whether it is caused by lung cancer or not. As there are many causes of back pain, patients are advised to find out the cause of the disease in time and take relevant treatment measures under the guidance of doctors.