The invention discloses a water-saving movable coal pulverizer having humidification and dust removal functions and used for nitrogen fertilizer production. The water-saving movable coal pulverizer comprises a rack and a conveying belt installed at the upper end of the rack in a rolling way, wherein a mounting rack is fixedly installed at the upper end of the rack, a pulverizer body located abovethe conveying belt is fixedly installed at the upper end of the mounting rack, an upper seal frame is fixedly installed on the outer wall of a discharging port formed in the lower end of the pulverizer body, a cotton canvas cylinder is hung at the lower end of the seal frame, and a lower seal frame is hung at the lower end of the cotton canvas cylinder. The water-saving movable coal pulverizer having humidification and dust removal functions and used for nitrogen fertilizer production has the advantages that the part between a discharging hopper and the conveying belt is sealed, so that dust produced by smashed fixed raw materials falling on the conveying belt does not fly about, an indoor environment is not polluted, the body health of workers is effectively protected, and raw material waste caused by dust leakage is also avoided.