The bedside X-ray unit is supplied for ward or emergency room to make radiography of various parts, such as thorax, head, backbone. A remote controller(Frequency:300MHz, control range within 5m to 10m) that is used in unit has some features, e.g. high stability of frequency and strong anti-interference. The unit adopts full-wave rectification (high kV ,mA) and electronic timer. It is equipped with buzzer, overload automatically alarm and automatically cut-off system to ensure the quality and service life of X-ray tube. The X-ray tube can be moved with wheels of φ300mm in latitude and longitude, and it is an ideal unit for radiography.