In order to solve the problem of low precision, robotization degree and digitization degree of electric initiating explosive device firing reliability test, a kind of technique of digital test for electric initiating explosive device firing reliability test had been studied. Using the technology of embedded microprocessor, digital controlled linear regulator and the digital electronic measurement, the test system hardware and software is designed and manufactured. The test system components and working principle are introduced. Electric initiating explosive device firing reliability is determined by the resistance value and firing status using the set electrical parameters. The results show that this kind of technique can solve the problem of low precision, robotization degree and digitization degree of electric initiating explosive device firing reliability test in the army.