The invention discloses a coal pulverizer which is vertically arranged. The coal pulverizer is provided with, from top to bottom, a coal dust outlet 3, a grinding table 4 provided with a coal grinding bunker and an air intaking device arranged at the lower part of the grinding table 4 and used for introducing wind into the coal grinding bunker, wherein the main shaft of the air intaking device is connected with and drives rotation of a lower planetary reducer 1, the input shaft of the grinding table 4 is arranged to be coaxial with the main shaft of the air intaking device, the air intaking device comprises an exhaust blade driven by the main shaft and an air inlet 11, an inlet adjusting vane 12 is arranged at the air inlet 11, and the inlet adjusting vane 12 is arranged on the support at the inlet in a hinge joint manner and is fixed by a locking part. During working of the coal pulverizer, the air intaking device can adjust air displacement so as to control discharge of coal dust, so production needs are satisfied under the condition that requirements on environmental protection are met.