The invention provides a through-hole crusher. The through-hole crusher comprises a coal grate in a slab shape, crushing rollers and drive devices. Multiple through holes for regularly formed in the coal grate. Tapered heads are fixedly arranged on the outer surface of each crushing roller according to the arrangement rule of the through holes. The tapered heads are correspondingly inserted into and formed into the coal grate in the rolling process of the crushing rollers. The drive devices act on the crushing rollers and provide power for rolling of the crushing rollers. By the adoption of the through-hole crusher, the crushing function and the through hole function can be achieved at the same time, the working efficiency is improved, meanwhile the energy consumption is reduced, the mounting space is reduced, and the through-hole crusher can be suitable for more occasions with limited mounting spaces.