When integrally formed by tablet compression, providing a tabletting die edge forming the tablet surface is suppressed. And a space S extending in the punches 3, 4 axially punches 3, 4 with a pressing surface 13 at the tip is inserted, the tablet 11 by pressing the powder 12 in the space S in the 13 and 14 the pressing face In tabletting die for use during the compression molded integrally, and forming groove 6 of the concave surface shape for forming a portion of the surface 11 Tablets molding, is connected integrally with the pressing surfaces 13, 14 I provide a separation mechanism that was formed in the annular space S inner circumferential surface, separating at least a portion of the die body 7 tablet 11 which is engaged with the molding groove 6 of the annular so that removable.圧縮によって錠剤を一体的に成形する際、錠剤表面のエッジ形成が抑制される打錠用臼を提供する。先端に押圧面13,14を有する杵3,4が挿入される杵3,4軸方向に延びるスペースSを備え、前記押圧面13,14によりスペースS内の粉体12を押圧して錠剤11を一体的に圧縮成形する際に用いられる打錠用臼において、錠剤成形時、前記押圧面13,14と一体的に連接されて錠剤11表面の一部を成形する凹曲面状の成形溝6をスペースS内周面に環状形成し、環状の成形溝6に係止される錠剤11が取出し可能になるように臼本体7の少なくとも一部を分離する分離機構を設ける。