The invention discloses a transparent insulating air duct for absorbing solar energy. The transparent insulating air duct comprises a double-layer transparent plastic bag, a solar energy absorbing layer, an outer sticking tape, an inner sticking tape, an inflation hole, reserved hanging belts, connecting ropes and hanging rings, wherein the double-layer transparent plastic bag is a hollow cylindrical structure after being filled with an inert gas through the inflation gas; the solar energy absorbing layer is positioned on the inner surface of the double-layer transparent plastic bag; the transparent insulating air ducts are connected through the sticking tapes; and the transparent insulating air duct and the hanging rings are fixed through the reserved hanging belts. According to a solar air heat collection device, the weight is light, the cost is low, the mounting is convenient, the solar energy utilization rate is high, and the device can be folded usually.