The invention discloses a multicutter device of a tile cutting machine. The multicutter device comprises multiple tile cutters, bearings, rotating shafts, gears and a gear box. The rotating shafts include a driving shaft and a driven shaft, the gears fixed on the rotating shafts are arranged inside the gear box and are mutually engaged with one another, the bearings sleeve the rotating shafts and the lower ends of the rotating shafts fully penetrate through holes in the lower side of the gear box, and the upper end of the driving shaft penetrates through holes in the upper side of the gear box, so that threaded parts of the rotating shaft are fully exposed out of the gear box to be connected with outer equipment conveniently, and the bearings are nested in a bearing cavity of the gear box. By the arrangement, the gears of the driving shaft drive the gears of the driven shaft to rotate to enable the tile cutters to run simultaneously, the tile cutters with different specifications can be connected according to actual needs to obtain neodymium-iron-boron products with different demands, the gears and the rotating shaft are protected through the gear box, generation of the multi-channel products can be realized on one production line by only one driving end of the tile cutting machine, production efficiency is high, cost is low and safety and practicability can be achieved.