Shaking device and tower fan

The invention provides a shaking device and a tower fan. The shaking device comprises a fixing assembly, a rotating assembly, a driving assembly and a rolling body assembly, wherein the rotating assembly is rotatably mounted on the fixing assembly; the driving assembly is mounted on the rotating assembly and can drive the rotating assembly to rotate back and forth relative to the fixing assembly; the rolling body assembly is arranged between the fixing assembly and the rotating assembly and is rotationally matched with the fixing assembly and the rotating assembly; thus by arranging the rolling body assembly between the fixing assembly and the rotating assembly, the contact mode in the matching process is point contact or line contact, the shaking process of the tower fan is more smooth and stable; relative to a two-conical-surface matching mode used in an existing technology, the conical surfaces does not need to be machined on parts of the fixing assembly and the rotating assembly, the problem that manufact