At present, there are four methods of the mass measurement of uranium components, they are: time-correlated coincidence, active delayed neutron counting method, neutron multiplicity counting method, and active coincidence neutron counting method which is studied in this thesis. 目前,对铀材料质量的探测方法主要有四种:时间关联符合法、主动缓发中子法、中子多重性测量分析法以及本论文所研究的有源符合中子法。