To provide a Stirling refrigerating machine advantageous in improving heat transfer efficiency between an expansion space and a cold transportation route.

The Stirling refrigerating machine has a compressing part compressing a working fluid, a heat dissipation part 10 dissipating heat of the working fluid compressed by the compressing part, a cold storage part 11 cooling the working fluid having passed through the heat dissipation part 10, the expansion space 13 taking in the working fluid having passed through the cold storage part 11, and an expansion element 14 expanding the working fluid of the expansion space 13. The cold transportation route 2 is provided for tanking in the working fluid of the expansion space 13. A heat exchange part 5 carrying out heat exchange with respect to the working fluid of the cold transportation route 2 is provided on the cold transportation route 2. Valve members 31, 41 are provided for supplying the working fluid in the expansion space 13 to the cold transportation route 2 by opening of a valve element.