The adsorption and reaction on surfaces, as a key step in heterogeneous catalysis, has shown extensive prospect in its development, corresponding with the rapid advance in heterogeneous catalysis. As for the theory investigation , there are two major problems that are concerned. One is the microcosmic mechanism of dynamics; the other is various information about active sits on catalyst surface. There is another concerned question about how to communicate macro-measure with micro-inforrnation. These question...