The piping structure to the hydraulic motor of the endless track driving apparatus according to the present invention is characterized in that a drive wheel and a hydraulic damper are attached to one end portion in the longitudinal direction of the bogie frame and the output side of the hydraulic damper is connected to the drive wheel through a speed reducer In a piping structure for a hydraulic motor of an endless track driving device, a cut-out portion is formed on an end plate near one end in the longitudinal direction of an electric bogie frame, and a straight connector connected to the pipe is protruded from the cut-Is connected to a pipe connecting end face of a pipe connecting portion of the electric motor and the pipe connecting end face is inclined to the inside of an electric cargo frame which is inclined with respect to the center of the driving shaft of the electric drive wheel.
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