The utility model discloses a power-supply first-aid repair apparatus. The apparatus comprises a material reserve box. A multilayer drawer is arranged in the material reserve box. A shockproof layer is arranged on an inner side of the drawer. A right side of the drawer is stuck with an RFID electronic tag. A material for the first-aid repair and a power-supply first-aid repair management terminal are stored in the drawer. A lead measurement disc is arranged above one side of the material reserve box and a temporary power supply box is arranged below the material reserve box. According to the apparatus of the utility model, the temporary power supply box, the lead measurement disc and the material reserve box are used to establish the first-aid repair apparatus. The temporary power supply box can be used to realize temporary power supply during on-site working and shorten power failure time. The lead measurement disc is used to measure a lead length. Lead losses during a first-aid repair process can be reduced. The material reserve box is used to place a conventional first-aid repair material so that first-aid repair preparation time can be shortened.