Hammer crusher, which has advanced performance, stable and reliable, can be used for cement, gravel, coal preparation, building materials, chemicals, power, metallurgy, road construction and compound fertilizer industries, such as: ore plant, refractory plant, cement plant, glass work and other industrial fields in the fine grinding with medium hardness materials. They are widely used to crush materials such as limestone, coal, salt, gypsum, alum, brick, coal gangue etc. They can also be used to break the fiber structure, the wood and the paper with good elastic and toughness, crush asbestos cement waste to recycle asbestos fiber and so on. Hammer crusher features high productivity, high reliability, easy maintenance, low equipment operation cost and energy consumption, dustless dust. It can break the wet material, that is, for crushing the wet material can reduce dust pollution to protect people health and environmental-friendly.