The utility model provides a combined type sucker rod centralizer which comprises a columnar centralizer body. The upper end of the centralizer body is provided with a threaded hole used for connection, the lower end of the centralizer body is provided with a lower connector, and permanent magnets, a sacrificial anode and a centralizer sleeve are fixedly arranged outside the centralizer body in a sleeving mode. According to the combined type sucker rod centralizer, the effects of conducting centralizing, corrosion prevention and scale prevention on an oil pumping tubing string and preventing the tubing string wall and a pumping rod from depositing paraffin are achieved by arranging the plastic centralizer sleeve, the magnesium sacrificial anode and the permanent magnets on the outer circumferential surface of the centralizer body.