Small cell lung cancer, chemotherapy six survival many factors related to, can not be generalized. According to clinical data, the general 1-year survival rate for limited stage is about 50%, and the 5-year survival rate is around 3%~5%. The 1-year survival rate of extensive stage is generally about 30%, and the 5-year is almost zero. If small cell lung cancer develops to advanced stage, that is, extensive stage, it is impossible to take surgical treatment, and only simple systemic chemotherapy is often unable to cure completely, and the survival period is usually about half a year to 1 year, and few patients can survive for more than 1 year. However, if small cell lung cancer patients are in the early or intermediate stage of the disease, that is, in the limited stage, and are able to take surgical treatment, and after the surgery, in order to consolidate the treatment, further chemotherapy is taken, the survival period will be longer, and the survival rate of 1 year is usually around 50%, and there are some patients who can survive for more than 5 years. It is recommended that patients go to the hospital regularly for review after chemotherapy and follow the doctor’s instructions for life care.