The utility model discloses a moving mechanism for well repair applicable to a tower type oil pumping unit. The moving mechanism comprises a linear guide rail component and a lead screw nut component, wherein two guide rails in the linear guide rail component are installed on a foundation in parallel; two sliders are arranged on each guide rail; the lead screw nut component comprises a lead screw, a bearing and a retaining nut; a bearing base is fixed on the foundation; the retaining nut is located on one side of the bearing base and fixed on a base of the oil pumping unit; the lead screw is installed on the bearing, and one end of the lead screw is penetrated into the retaining nut; a bush sleeves a matched section of the lead screw and the bearing. According to the moving mechanism disclosed by the utility model, an oil pumping unit body is moved by the linear guide rails, so that a sliding friction originally to be overcome becomes a rolling friction to be overcome, a power required for movement is reduced effectively; when the oil pumping unit body is moved, only one person and a wrench other than lots of manpower and equipment are needed to realize movement of the oil pumping unit body; the moving mechanism can be carried along with the oil pumping unit body; the moving mechanism is convenient to operate, steady in movement and high in safety.