Dark　silicon　leads　the　integration　development　of　multi-core　chip　to　a　standstill,　which　is　mainly　due　to　on-chip　power　constraints.　NoC　power　occupies　a　significant　portion　of　system　power.　Therefore,　reducing　the　NoC　power　can　reduce　the　dark　silicon　degree　and　reduce　the　performance　degradation　caused　by　the　dark　silicon.　In　this　paper,　we　firstly　analyzed　the　NoC　power　variation　on　the　dark　silicon　degree,　which　has　not　been　done　before,　and　proposed　a　heterogeneous　NoC　scheme　to　reduce　the　dark　silicon　degree.　By　evaluating　the　power　of　homogeneous　NoCs　and　heterogeneous　NoCs　separately　under　different　power　budgets,　we　verified　that　when　NoCs　adopt　this　heterogeneous　scheme,　most　of　the　workloads　would　get　one　more　core　power　saving　from　the　dark　silicon.　In　other　words,　at　least　one　more　core　could　be　lighted　on　and　the　dark　silicon　degree　can　be　reduced.