The invention relates to a safety protection system for a freight elevator. The safety protection system comprises an intelligent router, a storage battery, an emergency lamp, an image pick-up device and an alarm device which are arranged inside an elevator car, wherein the storage battery is simultaneously connected with the intelligent router, the image pick-up device, the emergency lamp and the alarm device; an SIM card slot, a network receiving circuit and a network sending circuit are arranged in the intelligent router; the intelligent router is simultaneously connected with the image pick-up device, the emergency lamp and the alarm device; and the SIM card slot is simultaneously connected with the network receiving circuit and the network sending circuit. According to the safety protection system, with the adoption of the structure, of the freight elevator, the storage battery and the intelligent router with the SIM card slot are arranged, so that a network transmission function can be realized by use of a simple SIM card; and when faults appear, the intelligent router is powered by the storage battery, and is used for transmitting video and alarm signals picked up by the image pick-up device, so that safety guarantee is provided for passengers of the freight elevator.