OK , i have tried this method even before i post this message .But i can't work with emacs , even more , the inputed chinese character is distortion which can't be recognized.
But i find another solution about this , which is by the help of a windows program call " AppLocale". I think it is a popular program when you meet the Multi language problem on Windows.
When i use this tool to start emacs with option called "Simple Chinese", the Chinese input goes well.
Although i real want to find the solution from emacs itself , i feel sorry that i can't . Maybe this is the problem come with Windows , so we can't do anything more.
However , if any one find some , please tell me about it , and let the emacs works more perfectly on All platforms.