The　freezer　chamber　of　a　BCDT90W　type　frost-free　refrigerator　was　chosen　as　a　research　object,　and　digital　particle　image　velocimetry　(DPIV)　technology　was　adopted　to　investigate　the　flow　fields　in　the　freezer　chamber　of　a　transparent　refrigerator　model.　The　physical　model　of　the　freezer　chamber　was　constructed　based　on　the　similarity　theory　and　the　hexahedron　grid　was　applied　to　discretize　the　computational　domain.　The　intake　fan　outlet　velocity　distribution　was　regarded　as　the　inlet　boundary　condition,　and　the　3-D　turbulence　RNG　k-Ε　mathematical　model　for　the　inner　flow　was　established.　The　SIMPLEC　algorithm　was　applied　to　deal　with　coupling　between　velocity　and　pressure.　The　numerical　simulation　results　agree　well　with　the　DPIV　measurement　results,　which　indicates　that　the　present　mathematical　model　is　correct.　The　numerical　simulation　and　experiment　results　show　that　the　flow　field　in　the　first　chest　was　favorable　for　obstructing　the　heat　transfer　though　the　surrounding　walls.　The　relative　difference　of　center　velocity　between　the　two　symmetrical　supply　air　opening　jets　of　the　second　chest　approached　28%,　leading　to　a　serious　non-uniform　temperature　distribution　in　the　chest.　The　supply　air　opening　jets　had　a　short　circuit　in　the　third　chest　obviously.