To get high energy green laser,using electro-optical Q-switched crystal LN,1.06 μm high energy narrow width laser output is obtained through Q-switched synchronization driving technology and LD-side-pumped slab technology.KTP is pumped to get high energy green laser output.As the input current is 120 A and the Q-switched frequency is 10 Hz,1.06 μm laser output energy is 264 mJ,and optical-to-optical conversion efficiency is 70%.Experiment results indicate that high repetition narrow width 1.06 μm laser can be obtained through electro-optical Q-switched driving technology and LD-side-pumped technology,and high energy green laser output can be gotten by pumping KTP.