The utility model provides a maintenance platform truck of ascending a height, including the base for provide the support, the wheel sets up the lower extreme of base, overhaul the case, install on the base, it is used for placing the maintenance apparatus to overhaul the case, the ladder of ascending a height sets up and is in the upper end of base for provide to climb and support, with the maintenance platform, fixed mounting is in the ascend a height one end of ladder and lies in overhaul the top of case. The utility model provides an integration that maintenance platform truck of ascending a height can realize overhauing preparation, emplacement and the maintenance process of operation sets up, has saved the preparation and the emplacement time of overhauing the apparatus, provide simultaneously can be stable the maintenance platform, improved whole maintenance work efficiency, we can say, the utility model provides a management is convenient, equipment is laid rationally, the convenient special tool car of maintenance platform that removes and take the function of ascending a height certainly.