The invention discloses a sun-oriented light concentrating heat energy generation device, which comprises a steering drive unit, an energy collection unit, a light concentrating unit and a photosensitive control module. The steering drive unit comprises a base, a rotary disc, a rotary shaft, a power source, a telescopic rod piece and two supporting rod pieces, wherein the rotary disc is rotationally arranged on the base; the rotary shaft is arranged below the rotary disc; the power source is used for driving the rotary shaft so as to drive the rotary disc to rotate; the telescopic rod piece is pivoted on the rotary disc and can move telescopically; and the two supporting rod pieces are arranged on the rotary disc. The energy collection unit comprises a bearing disc and a pipe body, wherein the bearing disc is arranged on the telescopic rod piece and the supporting rod pieces to change the position along with the movement of the telescopic rod piece; the pipe body is wound and arrangedon the bearing disc; and thermally conductive liquid flows in the pipe body. The photosensitive control module detects the irradiation direction of sunlight and drives the rotary disc and the telescopic rod piece to move so as to adjust the bearing disc to a proper sun-oriented position; and therefore light concentrating energy is improved to enhance the efficiency of sunlight concentration and thermal collection in the pipe body.