The invention discloses a rear beam and rolling blind assembling structure. The rear beam and rolling blind assembling structure comprises a rear beam main body, an installing hole, a guide rail, rolling wheels, a connecting rod, a rolling reel, a rolling blind shell, a rolling blind, an independent power supply, a photosensitive sensor, a controller, a rotating motor, a rotating shaft and an annular magnet; the installing hole is formed in the central surface of the top end of the rear beam main body; the photosensitive sensor is installed on the left side of the top end of the rear beam main body; and the independent power supply is arranged in the rear beam main body. Compared with the prior art, the rear beam and rolling blind assembling structure has the beneficial effects that the novel rear beam and rolling blind assembling structure is scientific and reasonable in design, the rolling blind shell is fixedly connected with the rear beam main body through the connecting rod, the rotating motor is controlled by the photosensitive sensor through the controller to rotate , the left end of the rolling reel makes contact with the annular magnet so that the rotating motor drives the reel to rotate and open the rolling blind, and dismantling and cleaning of the rolling blind are facilitated by the rolling wheels on the guide rail.