PROBLEM TO BE SOLVED: To provide a finger-loaded surgery instrument in which an instrument is fitted loosely to a finger to such a degree that blood circulation is not inhibited, and nevertheless the instrument is not moved to the finger in a therapeutic action.SOLUTION: A finger-loaded surgery instrument has: a surgical instrument; a finger loading part for fitting it to the tip side; a finger holding part attached in the width direction of the finger loading part, for holding the finger; and an L-shaped grip part attached in the L-shaped bent state from the rear end side of the finger loading part, for gripping with a finger other than the loaded finger.SELECTED DRAWING: Figure 1