Abstract: Through Rock-Eval analysis of Carboniferous-Permian bituminous coal and anthracite in Pingdingshan mine, Zhengzhou mine and Nanpiao mine, the evolution character of pyrogenation hydrocarbon generating potential of deformed coal and undeformed coal and their effecting factors are studied. As a result, it is showed that the tectonic stress, especially shear stress, results in degradation of side chains and functional groups of coal large molecules polymer, and accelerating evolution of hydrocarbon generation.