A maximum output power of 166.6 mW at 607.4 nm (σ polarization) is achieved in bulk PrYLF laser crystal pumped by blue laser diode (LD). An operation of 604.6 nm (π polarization) laser with maximum output power of 60.6 mW and slope efficiency of 13.6% is got by inserting a 0.1 mm glass plate into the laser cavity as frequency selector. Simultaneous multi-wavelength emissions at 607, 604, and 640 nm are also obtained.