Lung cancer is one of the fastest growing malignant tumors in terms of incidence and mortality, and one of the most threatening to the health and lives of people. People do not know much about lung cancer. If we can understand the symptoms of lung cancer in time, we can better understand the disease and take corresponding treatment measures. So, what are the signs and symptoms of lung cancer before death in the late stage? The following are the pre-mortem signs of lung cancer: 1. Facial and neck edema: there is superior vena cava on the right side of mediastinum, if the tumor is not effectively controlled and the tumor invades and presses the superior vena cava on the right side of mediastinum, the jugular vein will be angered, which is mainly caused by the obstruction of the superior vena cava by pressure and return flow, which will eventually lead to facial and neck edema. This situation requires patients to seek medical treatment in time. Hoarseness: It is the most common symptom of lung cancer in the late stage, which is caused by the compression of the laryngeal nerve that controls the left side of pronunciation. 3.Lung cancer pain: pain is a frequent symptom of advanced lung cancer patients, mainly shoulder pain is the main symptom of advanced lung cancer. This is mainly due to the pain of sensory and motor nerve fibers of the lateral upper limbs once the tumor invades into the area. Many patients have unbearable pain and have to use analgesic drugs to relieve the pain. 4. Loss of appetite: caused by tumor itself or metastasis, patients have many discomforts, depression and lack of interest in food, or even boredom when food is mentioned. Family members should pay attention to this and actively help patients overcome this. The most effective drug is corticosteroid. 5.Shortness of breath: Lung cancer patients will have different degrees of shortness of breath. In the advanced stage of lung cancer, there will be different degrees of pericardial effusion or pleural effusion, both of which will lead to shortness of breath. In addition, lung cancer is caused by the compression of tumor which leads to the gradual loss of lung tissue respiratory function.