The invention provides an oil-based ink stirring device. The device comprises a device body, a supporting rod, a stirring rod, a fixed base and a fixing block, wherein the supporting rod is embedded in the side, close to the top end, of the device body, the stirring rod is embedded in the top end of the supporting rod, the bottom end of the stirring rod is fixedly connected with stirring blades, the fixed base is embedded in the top end of the device body, and the fixing block is embedded in the top end of the fixed base; the fixing block comprises a placing plate, an embedding groove, a sloping groove, a displacement block, a tooth mark, an abutting block, a displacement shaft, a limiting bock, a sliding rail and a limiting rod, the abutting block comprises a sucking disc, a retractable block, a lifting rod, a limiting tube and a displacement groove, and the displacement shaft comprises a rotating rod and a connecting rod. The oil-based ink stirring device has the advantages that thedisplacement block is arranged, and the displacement shaft is pushed through the inward retraction when the displacement block is subjected to the weight of sink, so that the abutting block stretchesout to fix an ink tank.