Three differences could be found by comparing the advantages and disadvantages of Troditional Chinese medicine and Westem medicine from theory formation aspect. First, their subjects are different. Secondly, the knowledge bases are very different. Third, the methods used in the two medicine are not same. It is not difficult to see the respective advantages and disadvantages of the Chinese and Westem medicine when comparing the differences. Chinese medicine is prone to grasp the the macrocosm and base on theory system through observing the intem...