This invention discloses a medication combination, consisting of Baizhu, Danggui, Hanxincao, Huotanmucao, Ainaxiang, Shuodiao, Malan, Ludou, Canger, Daqinggen, Banbianlian, Xingren, Nuzhenzi, Qianhu, Jiatonghao, Yinchenhao, Yujin, Zhishi, Banxia, and Fuling for treating hepatoma and pancreatic cancer, modifies the conventional extraction procedure and is characterized by the inclusion of Poria, which possesses an anti-tumor ability, as the excipient. This medication combination is based on a novel and continuous theory for cancer therapy and traditional Chinese medicine theories. It has made use of nature and characteristics of those abovementioned medications to lead and change the environments for cancer growth inside the patients' bodies, and then to result in the discomfort and revulsion of cancer cells in such environments. In another word, this medication combination alters the cancer environment via pharmacology and exerts a certain extent of anti-tumor effect on the primary or metastatic hepatoma and pancreatic cancer.