The invention discloses an oil field fracturing system with antifreezing performance. The oil field fracturing system comprises a clear water tank, a mixing vehicle, a buffer tank, a sand mixing vehicle, a fracturing device, a well mouth and a throttling manifold, wherein the outlet of the clear water tank is connected with the inlet of the mixing vehicle, the outlet of the mixing vehicle is connected with the inlet of the buffer tank, and the outlet of the buffer tank is connected with the inlet of the sand mixing vehicle, the outlet of the sand mixing vehicle is connected with an inlet of the fracturing device, a plurality of flanges are arranged at the well mouth, and one flange of the well mouth is connected with the throttling manifold, the other flanges of the well mouth are connected with the outlet of the fracturing device, and the outlet of the throttling manifold flows back to the clear water tank to form a closed circulation system. The oil field fracturing system has the beneficial effects that the liquid can be rapidly heated by adopting a steam automobile, so that the guanidine gum is fully swelled; and when there is no construction at night, the normal operation of the equipment is guaranteed by adopting the full-pipeline circulation and heat preservation, the pipeline is prevented from being disassembled, and equipment freeze-plugging is prevented.