Based on fractal geometry method and land use graphics database

this paper describes an algorithm for fractal dimension of land use types. The algorithm is a fractal dimension expression about area and perimeter. And this algorithm is applied to analyze the change feature of land use types. The experimental results indicate that fractal dimension （ D ） values vary from 1 to 2 and the certain land use types is associated with the fractal dimension D . The D of land use types reflects the degree of complexity

stability and change tendency of land use change. When the value of D is 1.5

namely D is critical value; the change mode of land use types is Brown random movement. The more the value of D is closer to the critical value

the more the stability of land use type is worse

and the complexity of land use type is higher; verse vice. Moreover

the D change or certain land use type reflects the change tendency of this type in different time periods. When the D of certain land use type increases

its area also increases; verse vice

its area decreases. The experiment has been done and supports this conclusion.