Rare　earth　ions　doped　materials，　organic　dyes　and　quantum　dots　are　employed　to　realize　the　fluorescence　temperature　sensing　which　has　great　significance　in　aerospace，　biomedicine，　food　storage，　etc.　Fluorescent　materials　of　inorganic　halide　perovskite　QDs（PeQDs）　possess　great　application　prospects　in　the　field　of　fluorescence　temperature　sensing　due　to　high　quantum　yield　and　strong　temperature　dependence.　However，　PeQDs　have　only　one　photoluminescence（PL）　peak　whose　intensity　and　position　are　highly　susceptible　to　interference　from　factors　such　as　concentration　and　size，　resulting　in　low　accuracy　in　temperature　sensing　using　this　PL　peak　alone.　In　this　work，　we　propose　a　novel　temperature　sensing　structure　using　microsphere-cavity-array（MCA）capped　PeQDs　film（MCA/PeQDs）.　Fluorescence　temperature　sensing　is　realized　using　the　temperature　dependent　PL　peak　intensity　ratio　between　the　MCA/PeQDs　structure　and　the　bare　one.　Through　the　Purcell　effect　induced　by　microsphere　cavity　supported　whispering-gallery　modes（WGMs）　in　the　microsphere　cavity，　the　spontaneous　emission　rate　is　enhanced，　and　the　phonon　assisted　thermal　quenching　effect　is　suppressed，　which　results　in　better　fluorescence　enhancement　of　PeQDs.　As　a　result，　when　the　concentration　of　PeQDs　is　0.131　6　mg/mL　and　the　diameter　of　the　microsphere　is　（19±1）　μm，　the　absolute　sensitivity（Sa）　and　relative　sensitivity（Sr）　can　achieve　0.75　K-1　and　1.95%·K-1.　The　present　work　overcomes　the　poor　accuracy　of　temperature　sensing　in　single　PL　peak　and　opens　up　a　new　way　for　fluorescence　materials　used　in　fluorescence　temperature　sensing　with　high　performance.　©　2023　Chines　Academy　of　Sciences.　All　rights　reserved.