An　experimental　investigation　on　the　refrigeration　process　of　a　pressure　wave　refrigerator　was　conducted　in　order　to　determine　the　relevant　factors　affecting　on　the　temperature　distribution　of　the　receiving　tube.　In　the　investigation,　receiving　tubes　are　divided　into　the　long　tubes　and　short　tubes,　while　the　relevant　factors　including　expansion　ratio　epsilon,　tube　length　l,　pulsing　frequency　f　and　shock　absorption　factor,　etc.　The　experimental　results　demonstrate　there　is　obvious　difference　between　the　temperature　distribution　of　the　short　and　long　tubes.　But　both　of　them　would　increase　when　turn　up　the　expansion　ratio　and　pulsing　frequency.　Adding　the　shock　wave　absorber　would　decrease　the　steady　temperature　of　the　receiving　tube　at　least　100　degrees　C.