The invention discloses an installing and supporting track for a battery set of an underwater vehicle belonging to the technical field of an underwater robot, comprising positioning hole bases, supporting wheels, an installing base and guide wheels; two positioning hole bases are fixed at the two ends of the base plate of the installing base; two ends of the center shaft of the supporting wheel are installed in the round holes of the two side plates of the installing base; the center shaft of the guide wheel are fixed on the base plate of the installing base; the outer circumference surface of the guide wheel penetrates a square hole located at the same side of the installing base; the supporting wheels and the guide wheels are spaced; the axis of the guide wheel is perpendicular to the base plate of the installing base; the axis of the supporting wheel is perpendicular to the side plate of the installing base; the supporting wheels form the operation track for the battery set to get in and out of the shell of the underwater vehicle; the guide whole is used for guiding the unbiased movement of the battery set; the track is good in frictional characteristic and high in guiding precision and can drive the battery set to get in and out of the shell of the underwater vehicle by manpower without bias.