The experiment on lamp-pumped Q-switched Nd3+∶YAG laser is carried out.The output characters of Nd3+∶YAG laser is analyzed.The pumped voltage is changed 500V to 950V,it is find that the output pulse energy linear increased with pumped voltage.The error of measured the pulse energy changes 2.9% to 0.5%.The pumped voltage is changed 500V to 950V,it is find that the pulse width is decreased with pumped voltage.The error of measured the pulse width changes 21.6% to 10.5%.The pulse peak power is increased.The pumped voltage is changed 700V to 900V,the pulse energy and the pulse width are no change.The error of measuring is 1% to 13%.