Professor LIN Hong-sheng is engaged in the prevention and treatment of cancer research for nearly 50 years.She came up an innovation theory that “Gu Ben Qing Yuan” to prevent and deal with tumor,according to academic thought and her experience of clinical and scientific research.The concept has helped to establish the standardization treatment system combining Chinese and western medicine tumor in stages,largely improved the clinical curative effect of TCM prevention and treatment of malignant tumor.Small cell lung cancer is a tumor in high malignant degree,easy to metastasize and recur.With the help of “combine traditional Chinese and Western medicine treatment system of standardization of tumor in stages”,largely prolong patients' survival time,improve their life quality.Now it's going to introduce professor LIN Hongsheng's clinical experience of the treatment of small cell lung cancer.