Abstract: Under high gas emission and closed distance coal seams in Shaqu Mine, the gas concentration overrunning often appears in the upper corner and the return-air current of fully-mechanized face 14205,which seriously threaten the production safety of coalface.In order to grasp the situation of gas emission and its changing rule, ensuring the production safety of this fully-mechanized face, the paper analyses the gas emission sources and its constitution in fully-mechanized face of high gassy coal seams. By theory analyzing and measuring in scene, gas emission distribution laws and gas enriched locations of the fully-mechanized face are given, which is used to provided an important guide to comprehensive gas control of the fully-mechanized face.