Energy efficient hammer crusher is suitable for breaking a variety of brittle and medium hard materials that the surface water does not exceed 2% and the compressive strength is not more than 150MPa. It is suitable for the crushing or fine crushing of coal, coal gangue, limestone, shale, feldspar, gypsum, coke, tiles, gravel, salt and parathion, limonite brick of the coal, metallurgy, building materials, chemicals, electricity and other departments. It has characteristics of lightweight compact, simple structure, easy operation and maintenance, great breaking ratio, less over crushing, uniform particle size and small, high output, low-energy, etc.