The invention relates to an improved pulverizer which comprises a casing and a rotary disc A and a rotary disc B arranged in an inner cavity of the casing. The improved pulverizer is characterized in that the rotary disc A and the rotary disc B are connected through a connecting rod; the connecting rod is hinged with a hammer for hammering and cutting materials; the upper part of the casing is arranged above a hammer knife hinged on the connecting rod, and a material inlet is arranged on the hammer knife. The invention has simple structure and favorable effect of hammering and cutting materials and high pulverization degree, can effectively prevent the materials from winding on the rotary discs in the pulverization process, can also prevent the condition of incapable normal work of the pulverizer when a sieve mesh is blocked by the materials, and improves the work efficiency of the pulverizer.