Stone production line knows as sand and gravel production line, is the production building, road, rail and other industry dedicated production line equipment. Stone crushing plant generally includes vibrating feeder, jaw crusher, Impact crusher, vibrating screen, stone washing machine etc. Stone production line according to the hardness of the material can be divided into one-step forming stone production line and secondary stone crushing line, and the impact crusher machine in the stone production line belongs to the secondary crushing equipment. In order to make the users to better understand the characteristics of impact stone crusher, we introduce the role of impact rock crusher. Impact crusher is a new type and high efficient crushing equipment. 1. Large feed port, high crushing chamber, less products powder; 2. The gap between the counterattack plate and the flat hammer can easily adjust; effective control the discharging-material size, particle shape is good; 3. Structure compact, machine rigidity is better, the rotor has a large rotary inertia; 4. High chromium flat hammer, impact resistance, abrasion resistance, impact force are better; 5. Non-key connection, so easy to repair, economic and reliable; 6.completaly crushing function, high productivity, mechanical abrasion is small and the overall efficiency is high.