A warped piece comprises a rotary part, a left warped part, a left end part, a convex cylinder, a right warped part, a right bent part and a tine part; a rotary circular hole is formed in the rotary part, and the posture, that the axis of the rotary circular hole of the rotary part is parallel to the ground, of the warped part serves as the posture used for describing the structure of the warped piece through characters; the lower end of the left warped part is connected with the lowest point of the cylindrical face of the rotary part, and the upper end of the warped part is connected with the left end part (S62); the bottom face of the left end part (S62) is connected with the upper end face of the convex cylinder (S63), the lower end of the right warped part (S64) is connected with the lowest point of the cylindrical face of the rotary part (S61), and the upper end of the right warped part (S64) is connected with the left side of the right bent part (S65); and the upper end of the tine part (S66) is connected with the right end of the right bent part (S65), and the lowest point of the lower end of the tine part (S66) is lower than the lowest point of the cylindrical face of the rotary part (S61). The warped piece has the characteristics that the warped piece can be used for manufacturing a scabbard of a fruit knife, carrying and using are convenient, using is safe, and the warped piece is not prone to incidental injury.