对不确定因果理论的诊断测试进行探索 ,将初始测试条件从 true推广到任意可满足的A,提出对不确定前提条件测试的概念 ,给出几个相关定理及其证明 ,利用这些结果有助于判定诊断空间 ,确定测试的优先序 ,从而提高测试效率 This paper explores the diagnostic tests of uncertain causal theory, extends the initial test conditions from true to any satisfiable A, puts forward the concept of uncertainty precondition test, gives some relevant theorems and their proofs, and the use of these results will help To determine the diagnostic space, to determine the priority of the test, thereby enhancing the test efficiency