A cold-storage pulsating pipe refrigerator includes compressor, heat regenerator, cold-end heat-exchanger, pulsating pipe, hot-end heat-exchanger, small hole valve, two-way air-intake valve and gas library, the end portion of cold-end heat-exchanger is equipped with phase separator and cld-storage device in turn. It adopts mixed gas as working fluid, its refrigerating gas is helium gas, and condensing gas is nitrogen gas, and when the refrigeration temp. is reached to below three-phase point of helium, the cold end of the pulsating pipe can produce gas-liquid-solid three-phase state, and the liquid-solid phase can be fed into cold-storage device after having been phase-separated; when the refrigerator is stopped, the cooled device can normally stably work by means of the refrigeration quantity provided by cold storage device, and the dynamic work of the machine can minimize noise interference of superconducting device.