Lung cancer is a kind of malignant tumor of respiratory system and metastasis often occurs in late stage, and lung cancer will have important organ failure when it develops to late stage. Three days before death, patients with advanced lung cancer may have the following symptoms, and family members should cooperate with medical personnel to provide good end-of-life care: 1. Pain: many advanced cancer patients often have severe pain or even explosive pain three days before death, and the use of any analgesics cannot reduce the pain; 2. Change of consciousness: at this time, patients will be in a drowsy state or even coma most of the time; 3. Respiratory difficulty: respiratory function will gradually fail, and throat sounds and severe respiratory difficulty will appear, which may require ventilator assistance to ensure breathing; 4. ℃ or above, and then the temperature will drop until it cannot be measured; 6. Inability to eat: most of the terminal patients with lung cancer are unable to eat and show abnormal emaciation, which is mainly related to the value-added and growth of cancer cells; 7. Cachexia: in the late stage, due to the consumption of multiple factors such as nutrition and immunity of lung cancer, patients may show extreme physical weakness, emaciation, and even skeleton-like; 8. Ulceration Trauma: As some patients with advanced lung cancer are bedridden for a long time, if they are not turned in time 3 days before death, it may cause pressure sores on the skin, mainly manifesting as local skin ulcers and traumas, mostly on the sacrococcygeal region and buttocks.