A power generation and charging device for continuous running of an electric automobile comprises generators, a charger and a storage battery. The generators are disk generators and are arranged on rims of wheels. The power generation and charging device is provided with the storage battery as same as an automobile-mounted power supply, and current leading-out wires of the generators are connected with the storage battery through the charger and a circuit converter. The original storage battery of the electric automobile is connected with an automobile power supply binding post through the circuit converter. Through the power generation and charging device, a replaced power supply is provided when the electric quantity of the automobile-mounted power supply of the electric automobile is insufficient, and the continuous running mileage of the electric automobile is greatly increased.