Pulse laser performance of Nd∶GdVO 4 crystal is investigated by using xenon-flash lamp as pump source. The dimension of the laser crystal sample is 4 mm×4 mm×6 mm. With output coupler transmission of T=15%, static output energy of 31.7 mJ is obtained at the pump energy of 6.32 J. For T=7% output coupler, the pump threshold of the laser is 0.13 J. The passively Q-switched operation is achieved by using 1.5 mm thickness Cr 4+∶YAG wafer with small-signal transmission of 54.7%. The dynamic-static laser output ratio is about 1:3. With T=15% output coupler, single laser pulses with duration of 48.0 ns and 39.2 ns are acquired at the pump energy of 3.89 J and 6.32 J, respectively.