An electric aircraft paying-off unhooking device comprises a base, a lock shaft, a lock ring and a motor. The lock shaft, the lock ring and the motor are arranged on the base. The lock shaft can move in a reciprocating mode along an end opening of the lock ring under driving of the motor. The electric aircraft paying-off unhooking device is characterized in that a transmission nut is fixedly arranged on a shaft body of the lock shaft, and the transmission nut is in matched connection with a screw rod fixed on a motor shaft of the motor. After the structure of the screw rod and the transmission nut is used, the motor shaft directly drives the lock shaft to move in a reciprocating mode through the screw rod and the transmission nut, the structure is simple, and reliability is greatly improved.