To study the effect rule of the type and size for polysilicon bridge on the ignition performance of Al/CuO energetic igniter, six kinds of energetic igniters with different shapes and sizes were prepared by integrating polysilicon with Al/CuO multilayer films and the firing sensitivities of four sizes and two bridges-a total of six kinds of igniters(S, M, Lr, Lv, Hr, Hv)were tested by employing the Neyer D-optimal sensitivity method. The critical electro-exploding voltages of the igniters were explored. The change rule in firing time with the excitation voltage was obtained. The ignition performances of polysilicon igniter and energetic igniter were comparatively studied by sensitivity test and ignition test. Results show that the sensitivity and firing time decrease with increasing the bridge film volume, and the V-type-angle bridge film helps to decrease the action time and energy needed for the action. The 50%-firing voltage of 8.70 V and standard deviation of 0.53 of the polysilicon igniters are higher than those of the energetic igniters (8.19 V, 0.14). Due to the energy release during chemical reaction of Al/CuO multilayer films, average firing time of 52.85 μs of the energetic igniters at 14 V is much lower than that of 109.12 μs of the polysilicon igniter at 14 V and this difference decreases with the increase of excitation energy.