Abstract: This paper introduces a kind of real-time remote controller of industrial X-ray instrument. The controller adopts the information from the controller of X-ray instrument with the PLC(programmable logic controller). Via a wireless data communication, the X-ray instrument can be turned on and off by a PDA(wireless palmtop computer), and its real-time working situation be displayed on the PDA. So the operator can be far away from X-ray, resulting to high safety of operating personnel and improvement of working efficiency.