A control device of a cutting tool is revealed. For performing cutting, opening and closing, the cutting tool includes a pair of handles pivotally connected to each other and each handle having a blade. The control device is set on the handle and involved in opening or closing of the blades of the cutting tool. The control device includes a first component and a second component. The first and the second components are connected to and locked with each other tightly by a fastening structure. The control device is disposed on the handle closely, without loosening from the handle.剪具的控制裝置,剪具為進行切割和閉合,包括具有刀體的一對握柄,該一對握柄為相互樞接可以進行樞轉,本發明是指設於握柄上的控制裝置,該控制裝置涉及剪具刀刃體的開啟或閉合之調整,該控制裝置包括:第一組件與第二組件,所述第一組件與第二組件係藉由扣合卡摯的結構達成緊密結合之控制裝置,並使該控制裝置組合於該握柄且不會鬆脫者。1‧‧‧控制裝置11‧‧‧第一組件111‧‧‧頭部111a‧‧‧柱孔112‧‧‧柱部113‧‧‧扣部113a‧‧‧斜面114‧‧‧穿槽12‧‧‧第二組件121‧‧‧頭部121a‧‧‧柱孔122‧‧‧中空管體123‧‧‧窗口124‧‧‧平台124a‧‧‧擋部125‧‧‧凹槽126‧‧‧開口
