The invention provides a vacuum cylinder mold for a papermaking machine. The vacuum cylinder mold has simple structure, can meet different requirements of paper for vacuum degree, is good in sealing and improves dehydration efficiency. The vacuum cylinder mold comprises a cylinder mold body, a vacuum box and a bearing, wherein two ends of the cylinder mold body are respectively connected with shaft necks which are respectively supported on bearing seats through bearings; the vacuum box is arranged inside the cylinder mold; one end of the vacuum box is connected with a vacuum box head which is arranged inside an operation-side shaft neck; the outer end of the vacuum box head is provided with a vacuum-pumping device; water suction holes are uniformly distributed on the surface of the cylinder mold; three rows of water suction ports with different sizes are axially arranged on the vacuum box; the vacuum box close to the inner wall end of the cylinder mold body is provided with sealing devices which can enclose the water suction ports to form dynamic seal; and two partition plates are arranged inside the vacuum box and divide the vacuum box into three small-to-large vacuum chambers, i.e., a first vacuum chamber, a second vacuum chamber and a third vacuum chamber.