Based on the adsorption experiment of the coal samples from the Jincheng and Jiaozuo areas, the difference and geological controls of pore structure and adsorptivity between the tectonically deformed and undeformed coals were comparatively discussed. It was found that the turning point between two liquid nitrogen adsorption stages for the deformed samples move forward comparing to the undeformed samples, indicating the smaller median diameter and the larger volume and specific surface area of total, middle and micro-pores in the deformed samples.