According to the insufficient endurance of rotor UAV in power line inspection, a design of high voltage electric-field induction energy-acquisition based on pulsed power technology is proposed.The inductive electric energy is stored between the high voltage electric field and the overhead ground line by using the airborne conductor of the patrol UAV as a floating electrode.The airborne conductor cascades the gas self-triggering switch and the inductor, and forms an energy-receiving loop with the overhead ground wire.The floating electrode breaks through the switch air gap and discharges to the ground.With the development of air gap discharge, the distributed capacitance between the floating electrode and the power line and the overhead ground line will be quickly divided to suppress the discharge.Therefore, an arc cannot be formed between the air gaps, and the high-frequency stream is injected into the pulse discharge to excite the high-frequency electromagnetic oscillation of the loop.Finally, the electric field induced electric energy output is realized by the electromagnetic mutual inductance.This paper introduces the principles of this design and the theory of inhibition-discharge, analyzes the equivalent energy-gaining circuit and builds a discharge-pulse energy-gaining circuit model.The feasibility of the design is verified through tests on the physical platform.