The utility model discloses a separate stratum fracfturing device is kept apart to multiple coal seams capsule, including setting up in bared hole and passing the sleeve pipe in a plurality of coal seams, be formed with a plurality of floral tube sections that correspond with a plurality of coal seam positions respectively on the sleeve pipe, the cover is equipped with a plurality of bag bags on the sleeve pipe, and the bag bag is used for the sleeve pipe and the rock stratum of coal seam both sides to form bag pocket type well cementation structure, and through the communicating pipe intercommunication, one in a plurality of bag bags through slip casting pipe and slip casting headtotail between the adjacent bag, the intraductal movably capsule hole sealing fracturing device that is equipped with a body structure of cover, this capsule hole sealing fracturing device is connected with the fracturing pump package and is used for carrying out successive layer hydraulic fracturing to the coal seam to before to arbitrary coal layer fracture, the tube hole section that is located corresponding floral tube section front and back side at the sleeve pipe forms capsule hole sealing structure. The beneficial effects of the utility model are that, fracturing device simple structure, effectual, the low in manufacturing cost of hole sealing, fracturing process strong operability, efficient, the separate stratum fracfturing is with strong points, and antireflection effect is good.