The invention relates to a cleaning and maintaining vehicle for a power system. The cleaning and maintaining vehicle is used for providing cleaning and maintaining functions for maintenance workers for power equipment in the power system in real time. The cleaning and maintaining vehicle for the power system comprises sliding rails, a plurality of vehicle bodies and controllers, wherein the sliding rails are arranged on one sides of all the pieces of power equipment in the power system respectively; the multiple vehicle bodies are slidably connected to the sliding rails at equal intervals; the parallel baffles are arranged on the two sides of the vehicle bodies and are perpendicular to the sliding direction of the vehicle bodies; a plurality of layers of storage plates are horizontally arranged between the two baffles and slidably connected with the baffles; the controllers are fixed to the power equipment and are in wireless communication with the vehicle bodies. According to the cleaning and maintaining vehicle for the power system, by arranging the sliding rails around the power equipment in the power system and arranging the vehicle bodies which can slide along the sliding rails on the sliding rails, the vehicle bodies can be controlled by the controllers on the different power equipment to move to the positions near the power equipment needing to be maintained, the labor intensity of the power equipment maintenance workers is effectively relieved, and the cleaning and maintaining vehicle is convenient and fast to use.