Based on Fangezhuang Mining Branch Company 1327 working face crossing old underground workings actual situation, through the analysis of site condition and related geological data, for most old underground workings section in the coal seam, replacing shed and sprayed concrete filling whole section technology was put forward; for old underground workings sections beneath coal seam, coal gangue filling technology was recommended. Thus, the technology ensured the safety of working face recovery and avoided coal winning machine damage, reduce the coal loss, and coal gangue interfusion, ensured the coal quality.