Abstract: Two basic keys to history study can be listed as history document and history viewpoint, or research method. Nowadays, just like the western scholars focusing on developing research method, our domestic historians have the same enthusiasm in research method. However, any theory, no matter how perfect it is, could only be seen as a tool for history study. An objective conclusion is fundamentally based on true and abundant history documents. Therefore, it is an initial task for historians to explore and select history documents. Western historians pay much more attention to the built-up of methodology due to philosophic. Their understandings of history study are not only the presentment of history, but also forecast for the future, which answers for the reason why they feel that the Chinese traditional historic records in chronological style are boring and lack of scientific values. Whereas, as we define history as a state of past time, we have to put more stress on pursuit of documents and truth in history, other than built-up of methodology.