In order to find an effective method of mine confined water mining with pressure, No. 4 Mine of Fengfeng Mining Bureau, 4804 (4904), 4806 (4906) two close coordination of coal seam mining working face floor rock mass movement observational regularity was studied. Research showed that close distance coal seam using the method of upper and lower face coordinating mining, speeded up the working face advancing, mine pressure can be controlled, lightened the working face in mining influence degree, minimized the coal floor damage depth, relatively increased the thickness of bottom water-resisting layer, reduced the coal floor water inrush risk, achieved the goal of safe mining. Thus close coordination of coal seam mining confined water from coal floor was the effective prevention of mining coal mining method under pressure.