As　the　number　of　cores　on　CMP　increases,　the　size　of　an　on-chip　cache　increases　and　it　consumes　more　and　more　power　of　the　whole　system.　So　low-power　oriented　design　has　become　an　inevitable　trend.　However　currently　most　of　the　partitioning　strategies　are　aimed　at　throughput　or　fairness,　ignore　the　power　consumption.　In　order　to　reduce　system　power　consumption,　a　new　low-power-oriented　hybrid　partitioning　(LPHP)　strategy　for　shared　cache　is　proposed　in　this　paper.　Due　to　the　program　locality　principle,　it　uses　both　private　and　shared　resource-allocation　methods　to　implement　the　partitioning　strategy　by　combining　the　two　threads　whose　access　appears　large　difference　into　one　partitioning　unit　at　run-time.　Then　when　running　the　same　application,　some　of　the　cache　columns　can　be　closed　within　the　performance　degradation　threshold　(PDT).