Based on water goaf mining and water threatened safe mining in Xin’an Mine, economic parameters of two construction plans were compared, with small coal pillar, mining and dewatering on that day technology was settled. The maximum hydrostatic pressure of coal pillar and mining working face was controlled in less than 2 m water column by checking day mining, No. 1 group dewatering + No. 2 group mining, No. 3 group dewatering team work was set. The roadway mining achieved at 5 m per day, the technology provided technical reference for similar working face design and mining.