The invention discloses a lifting solar water heater device fully using energy. A base is positioned below the ground; an extension mechanism is arranged above the base; a lifting mechanism is arranged above the extension mechanism; a bracket mechanism is positioned above the lifting mechanism; a solar water heater is placed above the lifting platform; a controller and a battery box are arranged above a bracket; a signal output end of the controller is electrically connected with a stepper motor; a signal input end of the controller is electrically connected with a temperature sensor, a cameraand a temperature sensor; a power supply output end of the controller is electrically connected with a first linear motor, a second lifting linear motor and the stepper motor; and a power supply input end of the controller is electrically connected with the battery box. The lifting solar water heater device has the beneficial effects of simple structure and high practicability.