It's still challenge and urgent to develop highly efficient and robust catalyst for the large-scale preparation of low-cost dye-sensitize solar cells (DSSCs). We presented here the successful synthesis of ternary CuFeSe2 nanocubes through a facile hot-injection method for utilization as counter electrode (CE) catalyst in DSSCs for the first time. Due to their reasonable charge-transfer ability, excellent electrocatalytic activity and the fast reduction reaction kinetics for the I-/I-3(-) redox couples, the resultant DSSC with CuFeSe2 achieved an impressive power conversion efficiency of 8.05% under AM1.5G illumination (100 mW cm(-2)), comparable with that of standard Pt electrode based device (7.73%). Additionally, the CuFeSe2 CE exhibited better corrosion resistance in the iodine electrolyte than Pt CE. The easy fabrication process, cost-effectiveness, good electrocatalytic performance as well as excellent chemical stability help the CuFeSe2 nanocubes stand out as an alternative CE electrocatalyst in DSSC.