The invention discloses a glass breaking system. The glass breaking system comprises a rack, two transmission belt pulleys, a conveying belt, an annular mounting groove, a waste iron collecting trolley, a scraper blade, a plurality of magnets and a breaking mechanism, wherein the two transmission belt pulleys are rotatably connected to the rack; the conveying belt is wound on the two transmission belt pulleys, and two transmission side belts with the opposite transmission directions are formed; the annular mounting groove is formed in the inner side of the conveying belt; the magnets are inserted in the annular mounting groove; the waste iron collecting trolley is arranged below the conveying belt; the scraper blade is fixed on the waste iron collecting trolley; the top of the scraper blade is in contact with the transmission side belt on the lower side of the conveying belt; and the breaking mechanism is fixed on the rack and is positioned above the conveying belt. The glass breaking system is simple in structure, iron scrap is collected by the magnets and is unloaded by the scraper blade, and therefore, the glass breaking system is convenient to use; and in a process of beating glass by a rotor, because a labyrinth feeding channel is formed between a first guiding baffle and two second guiding baffles, glass cullet can be effectively prevented against flying out from a feeding opening, and the circumstance that other people are injured accidently is avoided.