The invention discloses a double-leaf rose-shaped groove pattern trimmer for the top surfaces of shrubs and belongs to the technical field of greening and trimming in gardens. The double-leaf rose-shaped groove pattern trimmer comprises a double-leaf rose trace generation mechanism and a tracking spherical-motion mechanism and controls the double-leaf rose trace generation mechanism and the tracking spherical-motion mechanism, wherein the double-leaf rose trace generation mechanism is used for controlling a supporting shaft of a cutting groove motor to generate a double-leaf rose-shaped motion trace; and the tracking spherical-motion mechanism is used for making a vertical sleeve on the supporting shaft of the cutting groove motor to generate height change and finally leading a cutter on the vertical sleeve to form a spherical double-leaf rose-shaped space motion trace. The double-leaf rose-shaped groove pattern trimmer disclosed by the invention has the advantages that the surface areas of the shrubs receiving the sunshine are relatively enlarged, the curve surface of the reflecting noise of the shrubs is enlarged, the reflecting direction is changed, and further the noise of a vehicle is reduced, so that a driver at a high position feels more dynamic and pedestrians feel more spatially-heterogeneous.