The spatial changes of landscape pattern and its corridor effect have been a basic and hot issues of landscape ecology. This paper discussed the methods how to research landscape pattern space change and their effect by RS and GIS in Taoguan area of Wenchuan County before and after earthquack disaster, and also extracted the information about the distribution of landscape, then contrasted the landscape pattern of the past and the present situation, this provided a strong theoretical basis for rational planning of economic development and living address of mountain people.