PROBLEM TO BE SOLVED: To provide a mobile X-ray device capable of providing a comfortable travel operation feeling according to taste of an operator and use state.SOLUTION: In a mobile X-ray device, a control device 107 accumulates and stores a drive amount for about past 0.5-1 seconds of a drive device 110. The drive amount is fed back to the control device 107. The control device 107 decides an operation sensitivity parameter (feedback gain) based on change in the past (for example, for about previous one second) drive amount. For example, if a change in past drive amount is directed toward plus, it is determined that lighter operation sensitivity is requested, and a larger gain is set. If change in the past drive amount is directed toward minus, it is determined that a handle is requested to be dull, and a smaller gain is set. Thus, an operation sensitivity which an operator likes is determined based on operators way of operation, and an operation sensitivity is set according to it.
