Hand support of manicure machine, hand groove device of manicure machine and manicure machine

The embodiment of the invention relates to a manicure machine and particularly relates to a hand support of the manicure machine, a hand groove device of the manicure machine and the manicure machine. The hand support comprises a finger support plate, a first positioning plate and a second positioning plate, wherein the finger supporting plate is provided with an upper surface and a lower surface opposite to the upper surface, and the upper surface is further provided with a four-finger positioning structure used for positioning the other four fingers, except the thumb, of the left hand or the right hand; the first positioning plate and the second positioning plate are both vertically arranged on the lower surface of the finger supporting plate, and the first positioning plate and the second positioning plate are oppositely arranged; a first thumb positioning structure for positioning a left thumb is arranged on one side, deviating from the second positioning plate, of the first positioning plate; a second th