The invention provides underwater wireless charging equipment for an autonomous underwater vehicle, relates to the underwater wireless charging equipment for the autonomous underwater vehicle, and aims at solving the problem that no vehicle is designed on the basis of an internal charging structure of a wireless energy transmission technology. The equipment comprises the autonomous underwater vehicle, an underwater charging device and capture mechanical arms, wherein the autonomous underwater vehicle comprises a coupler secondary terminal, a resonance compensation circuit, a rectifier and filter circuit, a DC chopper, a master controller of the autonomous underwater vehicle, a load, a microprocessor, a battery pack, a current sensor, a demodulator circuit, a communication controller and a bus; and the underwater charging device comprises a submarine transmission cable, a water-tight joint, capture mechanisms, a transformer, another rectifier and filter circuit, a high-frequency inverter circuit, another resonance compensation circuit, a drive controller, a coupler primary terminal, another demodulator circuit and another master controller. The underwater wireless charging equipment is applied to the field of underwater wireless charging of the autonomous underwater vehicle.