Abstract: Ultrahigh pulsed power with short rise time has been needed in many applications. For single linear transformer driver(LTD) module with sixty cavities connected in series, this paper has explored the effect of the cavity-triggering sequences on the output current parameters of the LTD module and discussed the possibility to optimize the output parameters of single LTD module through adjusting the triggering time of each cavity. The results indicate that the current shapes of single LTD module could be adjusted effectively through adjusting the cavity triggering sequence. And the output current will have shorter risetime and higher peak if the switches in each cavity are closed after the arrival of the electromagnetic pulses from its neighbor immediately upstream. With the insulation level