The invention relates to the technical field of dies, in particular to an anti-deformation machining die. The anti-deformation machining die comprises an upper die seat and a lower die seat, wherein a fixed framework is further arranged above a female template; two symmetrically arranged movable plates are arranged above the fixed framework; the fixed framework and the two movable plates are all connected to guide columns in a sleeving manner; first mounting slots areformed in the upper surface of the fixed framework; second mounting slots corresponding to the positions of the first mounting slots are formed in the bottoms of the movable plates; telescopic rods are further arranged between the second mounting slots and the first mounting slots; second springs are connected to the telescopic rods in a sleeving manner; two ends of the second springs are fixedly mounted in the second mounting slots and the first mounting slots respectively; and two connection rods are further movably connected between the two movable plates. The anti-deformation machining die is simple in structure and convenient to use and can avoid friction to the female template when a material is pushed out and also prevent deformation of a female die, so that deformation of a stamped part is avoided.