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The utility model relates to a vertical sawdust drying machine belongs to sawdust drying field. Include: drying mechanism, hot -blast delivery pipe, feeding mechanism, fan, discharge pipe, connecting pipe and drying pipe, the drying pipe is spiral tubular structure of vertical arrangement, the drying pipe sets up inside drying mechanism, the top end and the bottom of drying pipe all pass through the side wall of drying mechanism, and one -to -one correspondence with feeding mechanism and one end of connecting pipe sealed intercommunication, both ends of hot -blast delivery pipe one -to -one correspondence with the top end of drying mechanism and feeding mechanism sealed intercommunication, both ends of fan one -to -one correspondence with the one end of connecting pipe far from drying pipe and the one end of discharge pipe are connected. The utility model makes full use of heat, improves drying efficiency and drying quality, also reduced the floor area of drying machine.