The present invention relates to a rotational water motor shaft rotating device that is convenient and safe to work semi-automatic rotation. The rotating water motor shaft rotating device according to the present invention rotates the driving shaft and the driven shaft when measuring by using a dial gauge whether there is an abnormality in the shaft alignment of the rotating water motor connected to the driving shaft and the driven shaft by the coupling, the bolt and the nut. In the rotating device, the support is installed inside the body of the circulating water motor, rotatably installed on the support, a hydraulic cylinder provided with a piston, fixed to the end of the piston, the head of the bolt is accommodated It characterized in that it comprises a jig provided with a receiving groove.
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