The invention discloses an energy-saving temperature control loop heat pipe device of an aerospace optical remote sensor, and the device is used for reducing power loss of an evaporator and a preheater of a loop heat pipe. The device comprises a driving heating circuit, a heat exchanger, a multi-stage heating circuit and a temperature measuring element. The surface of the evaporator is provided with the driving heating circuit for maintaining the flow of a loop heat pipe working medium or accelerating the flow of the loop heat pipe working medium. The heat exchanger for changing the state of the loop heat pipe working medium is arranged between the evaporator and the preheater. The surface of the preheater is provided with the multi-stage heating circuit for loading thermal control power.The multi-stage heating circuit communicates with the temperature measuring element for monitoring the temperature and flow of the loop heat pipe working medium. Through the cooperation of the drivingheating circuit, the heat exchanger, the multi-stage heating circuit and the temperature measuring element, the heat generated by a CCD device can be quickly brought away, the thermal control power consumption of the loop heat pipe is obviously reduced, and the defects of large resource consumption and a large weight of a traditional temperature control type loop heat pipe are made up.