The utility model discloses an oil outlet three-way joint for an oil field, and belongs to oil-well pump parts. The oil outlet three-way joint is characterized in that two vertically-formed horizontal-direction polygonal holes are formed between every two adjacent liquid outlet channels (2) in a three-way joint body (1), the polygonal holes point to the symmetric center direction of the three-way joint body (1), alloy columns (7) with the polygonal cross sections are arranged inside the polygonal holes, the alloy columns (7) and the polygonal holes are welded together, and the alloy columns (7) point to the end portion of the direction of a through hole and are arranged on a circle where the cross section of the through hole is located or outside the circle where the cross section of the through hole is located. The oil outlet three-way joint is applied to an oil-well pump, when a valve ball and the inner wall of the three-way joint are abraded, due to the mutual action of the valve ball and the alloy columns, further abrasion of the valve ball and the three-way joint is avoided, the maintenance time interval of the three-way joint is prolonged, the service life of the three-way joint is further prolonged, accidents are prevented from happening, and due to the design that only the alloy columns are required to be replaced, the cost is saved.