The utility model discloses a line spotlight solar energy light heat recombination utilizes ventilation unit mainly includes window frame, blade, the pivot of both sides. Be connected with a plurality ofly attached to the small -size rectangle flexible solar cell on the similar shutter blade between two window frames, shutter blade's both ends have set firmly the pivot, and the cover has gear and worm to mesh mutually in the pivot, guarantees the mutual parallel motion of each blade. The device can be opened according to the actual environment in the external world, the inclination's of closure and blade automatically regulated, can realize generating electricity when the printing opacity ventilates, generate heat, multiple functions such as heat -retaining. The device not only can satisfy ventilation's demand, still can reach to improve the compound purpose of utilizing of solar energy, and the electric energy and the heat energy of storage can be used to the life staying idle at home.