NOVELTY - A natural montmorillonite desulfurization device comprises cylindrical desulfurization and drying column (2) having lower part as lower gas storage chamber (6) and upper part as upper gas storage chamber (10). The lower gas storage chamber has natural gas inlet pipe (5) on its left side and stainless steel net on its upper side for the natural montmorillonite desulfurizer. The upper gas storage chamber has cover with gas outlet pipe (11) that is connected with natural transmission pipe.    USE - Natural montmorillonite device for desulfurizing attapulgite biogas, natural gas or coal gas.    ADVANTAGE - The device is easily structured with low cost and has improved effectivity on desulfurization and drying of natural gas.    DETAILED DESCRIPTION - A natural montmorillonite desulfurization device comprises cylindrical desulfurization and drying column (2), natural montmorillonite desulfurizer, upper gas storage chamber (10), upper cover, gas outlet pipe (11), operation platform, feeding hole, lower gas storage chamber (6), gas inlet pipe (5), condensed water chamber, blow-down pipe, escalator, discharging hole and base. The desulfurization and drying column has upper and lower ends disposed with flange trays which are respectively connected with the upper cover and condensed chamber. The bottom of the desulfurization and drying column is lower gas storage chamber having natural gas inlet pipe on its left side and stainless steel net on its upper side for the natural montmorillonite desulfurizer. A discharging hole is located on lower right part of the column and on the upper part of the steel net. The upper part of the desulfurization and drying column is upper gas storage chamber having a discharging hole on its right side and an operation platform and escalator on lower part of discharging hole. The upper gas storage chamber has cover with gas outlet pipe that is connected with natural transmission pipe. The lower part of the desulfurization and drying column connects with condensed water chamber having lower part being welded with blow-down pipe.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the desulfurization device.    Cylindrical desulfurization and drying column (2)    Natural gas inlet pipe (5)    Lower gas storage chamber (6)    Upper gas storage chamber (10)    Gas outlet pipe (11)