The utility model discloses a portable solid axle ultrasonic inspection device. The portable solid axle ultrasonic inspection device comprises a hood and a movement component which is arranged in the hood, wherein the movement component comprises a centering piece and an ultrasonic probe component which is arranged on the centering piece; the centering piece comprises a supporting shaft which is used for positioning; a rotary positioning seat is sleeved on the supporting shaft through a bearing; the ultrasonic probe component is fixed on the rotary positioning seat; and the rotary positioning seat is connected with a driving device through a transmission mechanism, and can drive the ultrasonic probe component to rotate around the supporting shaft. By using the portable solid axle ultrasonic inspection device, the centering piece is used for positioning, and the driving device drives the probe component to rotate around the centering piece, so that the solid axle can be inspected at different angles, missed inspection and erroneous inspection generated during manual detection by an operator are avoided, and the accuracy of axle inspection is effectively improved.