When lung cancer has spread, the overall survival time of patients is short, most patients have a survival time of about two years, and some patients may only have a few months of survival. If patients with lung cancer spreading have better physical quality, stronger body resistance, better effect of receiving surgical treatment, chemotherapy, radiotherapy and other treatments, and the degree of spreading as well as the parts of the disease spread less, the survival time is relatively long, usually around two years, and a few patients can even survive with the tumor for a long time, reaching a survival period of five years. When lung cancer spreads in the late stage, if patients do not receive any treatment, the disease progresses quickly and the average survival is three to four months. After the spread of lung cancer, patients are recommended to face the treatment in a positive way in order to reduce the symptoms and improve the quality of life and survival time.