Sickle arm digital medical X-ray photography system (DR), sickle composite arm design,  rail, save a space, to adapt to the various installation conditions, convenient installation.Electrodynamic DR support all electric control from multiple perspectives, satisfy the cover body image, especially for the special position of exposure has obvious advantages, which can realize the whole body photography;According to the different clinical needs the preset multiple exposure area.Sickle arm height and Angle can be adjusted flexibly, the Angle of rotation, the smooth movement, through software can add special parts, at the same time of reducing the physical workload of doctors, accelerate the speed and precision of the photography.