Science is endless, and only those who are not afraid of danger or difficult work can reach the science peak. Dr. Xu Ze has been working on cancer therapy for more than sixty years and works very hard day and night to do the basis of clinical oncology science for the patients and for human beings. In this book, all the contents are from his hard work, from his experiments, and from his excellent or superb surgery skills—which has two parts, part I and part II. Three main topics are also explained and demonstrated: 1. The reasons and the theoretical foundation of immunotherapy—that is, the theoretical basis of immunotherapy where all evidences are from his actual basic and clinical experiments. 2. How do we use immunotherapy to treat cancer patients? 3. The clinical verification of our immunotherapy is successful.