A mobile X-ray-diagnostic apparatus of an embodiment includes an X-ray generator, an arm, a main body, a support column, and at least two input equipment. The X-ray generator generates X-rays. The arm holds the X-ray generator at one end. The main body includes wheels. The support column is turnably supported about a vertical direction as an axis, and supports another end of the arm. The at least two input equipment are arranged on the support column such that heights in the vertical direction differ from each other, and controls driving of the main body.