PROBLEM TO BE SOLVED: To perform adjustment to various kinds of tablets having diverse shapes while suppressing a weight fluctuation of a tablet cut piece.SOLUTION: This tablet splitting device includes: a fall tablet guide member 31 having an obliquely upward inclined surface, and formed with a groove-like tablet fall path 32 from the upper end thereof to the lower end a holding mechanism 34 temporarily holding a tablet (10) of a splitting target going down through the tablet fall path 32 in a cutting position 33 halfway of the tablet fall path by path opening/closing a cutting mechanism 40 cutting the tablet in the cutting position 33 a groove depth prescription member 37 covering the tablet fall path 32 a thickness adjustment mechanism (38) expanding/contracting a relative distance (C) between the groove bottom of the tablet fall path 32 and the groove bottom facing surface of the groove depth prescription member 37 and a controller 23 acquiring thickness information of the tablet and adjusting the relative distance (C) to the thickness of the tablet by operating the thickness adjustment mechanism (38).COPYRIGHT: (C)2012,JPO&INPIT【課題】錠剤裁断片の量目変動を抑制しつつ多様な形状の各種錠剤に適合させる。【解決手段】斜め上向きの傾斜面を有しその上端から下端まで溝状の錠剤落下経路32が形成されている落下錠剤案内部材31と、錠剤落下経路32を下ってきた分割対象の錠剤(10)を錠剤落下経路の途中の裁断位置33に経路開閉にて一時保持する保持機構34と、裁断位置33で錠剤を裁断する裁断機構40と、錠剤落下経路32を覆う溝深規定部材37と、錠剤落下経路32の溝底と溝深規定部材37の溝底対向面との相対距離(C)を拡縮する厚み調整機構(38)と、錠剤の厚さ情報を取得して厚み調整機構(38)を作動させることにより相対距離(C)を錠剤の厚さに適合させる制御装置23とを備える。【選択図】 図1