The invention discloses a moisture-proof storage cabinet for bolts. The moisture-proof storage cabinet comprises a square cabinet body; cylindrical grooves are formed in the two side walls and the bottom wall of the square cabinet body and communicate with one another; a driving rotating shaft, a transition rotating shaft and a driven rotating shaft are arranged in the three cylindrical grooves correspondingly; bevel gears are arranged at the tail ends of the driven rotating shaft and the driving rotating shaft as well as the two ends of the transition rotating shaft correspondingly and mesh with one another; circular-arc-shaped through grooves are formed in the two side walls of the square cabinet body; cylindrical rotating blocks are arranged in the circular-arc-shaped through grooves and are fixedly arranged on the driving rotating shaft and the driven rotating shaft correspondingly; a stepping motor is arranged on the square cabinet body; and an output shaft of the stepping motor is connected to the driving rotating shaft. According to the moisture-proof storage cabinet, the structure is simple, drying agents can rotate and circulate to remove moisture for the bolts in the cabinet body, the drying agents on one sides can absorb the moisture in the cabinet body, the drying agents on the other sides can volatilize the moisture on the outside, and therefore cycle use can be realized.