The utility model relates to the field of corona discharge reactors, and especially relates to a transmission line type pulsed electric field corona discharge reactor. The device can be used to solve the disadvantage of large inherent structure capacitance and the disadvantage that a pulsed electric field having a pulse width of the magnitude of one hundred nanoseconds cannot be generated on pulsed electric field corona discharge reactors with the reactors in the prior art, and a transmission line type pulsed electric field corona discharge reactor is provided to enable the reactor to feed a pulse voltage having a shorter pulse width, a greater pulsed electric field is established on the reactor, and advantages of better desulfurization and denitrification effects and better dust removal effect can be realized. The device comprises N high-voltage electrodes, electrical connectors and a housing. The N high-voltage electrodes are serially connected through the electrical connectors successively end to end, the head end of the first high-voltage electrode is an input port, the tail end of the Nth high-voltage electrode is an output port, and the N high-voltage electrode which are serially connected are placed in the housing. The transmission line type pulsed electric field corona discharge reactor of the utility model is applied in the field of reactor design.