In present study, a significant improvement of molybdenum recovery was obtained through improving foam performance using Pluronics (L-61 and L-65), which were used as foam conditioner. The solution properties of L-61 and L-65, such as foamability, bulk rheology, and foam stabilities, on the flotation, were investigated through surface tension and rheological measurements. Results showed that the foam performance of fusel/L-65 composite system was better than those of fusel and fusel/L-61. Moreover, it was forever confirmed by bench-scale flotation that the recovery was increased by 5%, indicating that the foam performance could be improved with addition of L-65.