A shear hammer mill mainly comprises a feed inlet 1, hammers 2, a rotor 3, a sieve plate 9, a sieve pressing frame 13 of the sieve plate 9, a discharge outlet 7, a machine body 8, a motor 6, a fixed hammer rack 4 and fixed hammers 5 arranged on the fixed hammer rack 4. The fixed hammer rack is fixed on the machine body, and the fixed hammers are fixed on the fixed hammer rack and are parallelly mounted relative to a rotary plane of the hammers at an interval. When materials enter an inner cavity of the mill, a rotary material ring is formed after being hammered by the hammers, and then the materials can be crushed again after the material ring collides with the fixed hammers, and the fixed hammers can reduce rotating speed of the material ring, change moving direction of the materials and increase component force of the material moving to the normal direction of sieve meshes, thereby increasing crushing efficiency and improving uniformity of crushed materials.