Abstract: The concept of knowledge economy has being known and transported all over the world in recent years. Though there are some different judgments on the problem when the era of knowledge economy comes, all scholars think that the concept of knowledge economy appropriately summarizes the tendency and character of economy development in the world. Knowledge economy will change all aspects of people's life and development patterns. The revolution caused by knowledge economy has being noticed by the geographers of China. They have discussed some problems on the geography in the era of knowledge economy. In this paper, the author studies three parts of problems. The first part sums up the initiation and contibutions of geographers of knowledge economy. The second part discusses the impacts of knowlege economy on traditional geography theory. The third part deals with the problem that how geography face to the challenge of era of knowledge economy.