本文介绍了测量ｎｓ～ｐｓ量级核能级寿命的ｐｌｕｎｇｅｒ装置及对其有关性能的初步测试。用电容法标定了靶阻间的零点距，用激光反射偏转的方法测量了阻止膜运动的抖晃性。结果表明现加工的ｐｌｕｎｇｅｒ装置基本满足寿命测量的精度要求。针对原有装置的不足之处，我们作了改进。计划选用Ａ～１３０区域的核作为目标核来检验ｐｌｕｎｇｅｒ装置。 This article describes the plunger device that measures lifetimes of ns ~ ps orders of magnitude and preliminary tests of its performance. Capacitance method was used to calibrate the zero-point distance between targets and the shaking of the membrane was measured by laser reflection deflection. The results show that the plunger device is processed to meet the basic requirements of life measurement accuracy. For the deficiencies of the original device, we made improvements. It is planned to check the plunger device by using the A ~ 130 nucleus as the target nucleus.