I am presenting here the Chinese medicine view of cancer with patterns, treatment principle, herbs and herbal formulae. Very many of our patient have or have had cancer (or will have cancer) and, for this reason, I think it is extremely important to understand cancer from the point of view of Chinese medicine, even if we do not actually treat it. Moreover, even if we do not treat cancer itself, we can do our patients who have survived cancer a great service if we can develop treatment strategies to prevent recurrence.