The present invention provides an angle adjusting structure of a photographic light-supplement device and belongs to the technical field of photographic equipment. The angle adjusting structure solves the problem that existing light-supplement devices are laboursome to use in the prior art. The photographic light-supplement device comprises a bottom frame and a reflecting plate. The angle adjusting structure comprises a guide rod and an adjusting frame. The guide rod is in an arc shape. The two opposite side surfaces of the guide rod are provided with guide grooves. The upper end and the lower end of the adjusting frame are hinged with guide wheels. The guide wheels are arranged in the guide grooves in the rolling manner. The adjusting frame is provided with a fixing part. The back surface of the reflecting plate is detachably connected on the adjusting frame. By means of the angle adjusting structure of the photographic light-supplement device, the device can be adjusted at different angles, so that the device is more flexible and more convenient to use.