Abstract: By using the gas adsorption and desorption equipment of self-developed coal sample, in the conditions of constant temperature, same initial pressure, it comparatively studied the gas adsorption laws of the massive native structure coal and tectonic coal in Hangcheng Mining Area, and analyzed the influence factors. The test results showed that the gas adsorption capacity of per unit mass for mylonite coal, loose coal and scale coal was respectively 2.11, 2.26 and 2.52 times of the native structure coal in the equilibrium state. The gas adsorption rate of all coal samples showed a curve form variation with time monotonically decreasing. In the initial stage of adsorption, the gas adsorption rate of tectonic coal was faster, especially the difference was most obvious in the period of 0 to 2 min. The tectonic coal reached adsorption equilibrium in a shorter time, the adsorption efficiency was higher. The characteristics of good density and existing fractures no developing determined the stronger gas "storage" capacity of the native structure coal. Good pores and fissures epigenetic development determined that the tectonic coal was superior to the native structure coal in terms of adsorption properties, while the connectivity differences of pores development proportion and fissures development of different levels were the main factors of the adsorption properties difference of tectonic coal.