The utility model discloses a screw pump oil production well pumping rod centralizer that the petroleum industry was used, this centralizer include body and centre bore, and the body of centre bore periphery is personally experienced sth. Part of the body as setting upright or straight, should set upright or straight the vertical whole cycloid inner gearing screw -tupe that is of the body, are equipped with the spiral concave surface that can supply output liquid axial to pass through, can effectively reduce the liquid stream resistance, prevent the wearing and tearing between sucker rod collar and the sucker rod body of rod and the oil pipe, solve luo sucker -rod pumping jing's inclined to one side mill problem through the technological means than economical and practical. The utility model discloses right effectually, prolonged the pump inspection period that spiral shell sucker -rod pumping ground the pumpingh well partially greatly. Have big, the advantage such as be difficult fordroing of high temperature resistant, corrosion -resistant, tensile strength simultaneously, its processing technology is ripe, and the working property is reliable, has fine result of use and using value.