The invention relates to the technical filed of toy guns and provides a toy gun cartridge magazine. The toy gun cartridge magazine comprises a cartridge magazine shell, and a pill push slide block andan elastic element arranged in the cartridge magazine shell. The pill push slide block is arranged on the lower portion of a pill and comprises a pill push groove, a pulley support, a pulley block, aguide pulley support and a guide pulley, wherein the bottom of the pill push groove is fixedly connected with the pulley support, the top of the pulley support is fixedly connected with one end of the elastic element, and the other end of the elastic element is fixed to the top of the interior of the cartridge magazine shell; the pulley block is arranged in the pulley support; the elastic elementis wound on the pulley block and wound on the guide pulley after penetrating out of the pulley support; and the elastic element is fixed to the top of the interior of the cartridge magazine shell after winding across the guide pulley. By means of the toy gun cartridge magazine, the pill pushing-out action reliability and smoothness can be improved, and the cartridge magazine loading capacity is increased.