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A single stage Stifling pulse tube cryocooler was designed based on REGEN 3.2 and fabricated for testing.The experimental results show that the cooler can provide a cooling capacity of 5.0 W at 79.1 K,and produce a no-load temperature of 57.0 K,operating with an average pressure of 2.50 Mpa and a frequency of 60 Hz,performance results that are very close to the calculated values.The cryoeooler can be cooled from room temperature to 80 K in 8.5 min.The fast cooldown time is a result of the small regenerator.