Some challenges faced in weapon system maintenance of our army, especially of Air Force, are first introduced and a parallel test technology is derived in this paper. Great advantages of the parallel test technology are displayed based on the analysis of parallel test concept. And then various implement approaches of parallel test, their merits and demerits are analyzed in detail. In the end, several basic system archtectures of parallel test are put forward, which give some useful foundation work for the parallel test technology application in the future.