The utility model relates to the technical field of surfacing devices, in particular to a movable remedy surfacing device which comprises a surfacing main
machine and a
welding head arranged on the surfacing main
machine, a left base and a right base which are mutually symmetrical are arranged below the surfacing main
machine, a containing groove is formed in each base, and the top of each containing groove is communicated with the outside. An upper supporting plate and a lower supporting plate are fixedly installed on the side face of the base, an air cylinder is fixedly installed on the bottom face of the upper supporting plate, a supporting base is fixedly installed at the
tail end of a telescopic shaft of the air cylinder, and a supporting beam is fixedly installed on the side face of the supporting base, located in the containing groove and slidably connected with the containing groove. Longitudinal electric sliding tables are fixedly installed on the top face of the supporting beam, a transverse electric sliding table is fixedly installed between sliding seats of the two longitudinal electric sliding tables, and the surfacing main machine is fixedly installed on a sliding seat of the transverse electric sliding table. The movable surfacing repair device is convenient to carry out movable surfacing repair operation and is convenient to use.