The invention relates to the technical field of automobile maintenance, in particular to a mobile supporting device of an automobile maintenance shop. The mobile supporting device comprises a maintenance base, a control console and a ramp plate. The upper portion of the maintenance base is provided with a rear wheel fixed-point range and a front wheel fixed-point range. A fixed lift is arranged inthe rear wheel fixed-point range, and a movable base is arranged in the front wheel fixed-point range. A mobile lift is arranged on the movable base. Movable hubs are arranged at the bottom of the movable base and arranged in mobile guide rails. A front tire base is arranged at the top end of the mobile lift. According to the mobile supporting device of the automobile maintenance shop, by arranging the movable base and the mobile lift, the position of the front tire base can be regulated, and accordingly, the distance between front tires and rear tires can be regulated; the front tire base and a rear tire base are further arranged, so that the device is applicable to maintenance of automobiles of all models; and meanwhile, the lifts for the front tires and the rear tires are controlled separately, repairmen can perform maintenance by regulating the heights of front wheels and rear wheels according to needs, and the device is simple and easy to operate.