The research was completed on quantitative analysis to 92 rare Characters in a new-edition full medical dictionary. It shows there are two reasons which make a lot of rare Character come out from the appendix of the dictionary. One is not handling well the relations (simplified vs. traditional，variants，homophony) among characters. The other is insufficient corporation between computer science and related branch of learning, which makes the rare characters can’t be displayed and inputted. Good foundations of Philology will help distinct on relations among rare Characters. Fontlab software and MoveFileEx Windows API function etc can make characters display and unified update in the network environments.

For one hundred years, the Chinese character is good or poor? Is it easy or Complexity? Should continue to go its own way, or take the 'world of common phoneticdirection'? Repeatedly set off a heated debate until the new century, the problems have not been fundamentally resolved. The authors think that these arguments completely resolved, depends on the proper distinction, aware of two eras: the era of type and the computer age. In other words: the correct understanding of the new features of today's computer age is the key to Chinese characters all kinds of disputes resolved. Summary explanation: a century of Chinese characters should distinguish between two eras: type times and computer age; computer era of Chinese character information processing efficiency has alreadyovertaken English;electronics and software technology has beensuccessfully cracked a large amount of Chinese characters, the complex structure of the various problems; simplified and traditional Chinese characters compared in two age has a radically different landscape; implified and traditional Chinese characters compatible coexistence of conversion, wonderful, bright and harmonious development prospects.