Chinese medicine has been playing an important role in prevention and treatment of cancer, especially through integrated Chinese and western medicine by which curative effect is enhanced and survival time with tumor is prolonged. With the penetration of hi-tech experiment methodology, the mechanism of prevention and treatment is being brought to light by contemporary medicine. In the process, Chinese medicine plays a key role in promoting immunity function and cancer apoptosis, inhibiting cancerometastasis, and reversing drug tolerance, etc. The use of genetic chips will help elucidate the mechanism of Chinese medicine in preventing and curing cancer on the biological level.