The utility model provides a rolling device for a planetary rolling mill. The rolling device for the planetary rolling mill is characterized by comprising a frame body provided with a containing cavity, a supporting shaft provided with a supporting hole, a roller shaft, a roller connected with the roller shaft, a lead screw, a clutch adjusting assembly and a transmission assembly used for achieving rotation of the supporting shaft. The supporting shaft is arranged in the containing cavity through a first bearing set. The roller shaft is arranged in the supporting hole through a second bearingset, and a meshing structure is arranged between the roller shaft and the supporting shaft. The lower end of the screw rod is connected with the roller shaft through a thread; the upper end of the lead screw penetrates through the supporting hole, then continues to penetrate through the containing cavity to extend out of the frame body, is connected with the frame body through a first sliding bearing and a first thrust bearing and is fixed through an axial nut. The lead screw is connected with the supporting shaft through a second sliding bearing. The rolling device has good bearing capacity,abrasion is avoided, and equipment maintenance can be reduced.