A cutting tool mechanism comprises a base, a fixing module disposed on the base for fixing a product to be disassembled, a first moving mechanism disposed on a side of the fixing module, and a three-dimensional cutter rotatably disposed on the first moving mechanism and matched with the fixing module. The first moving mechanism extends in a first direction and is configured to drive the three-dimensional cutter to move in the first direction, and the three-dimensional cutter is configured to be driven to move in a second direction and in a third direction, each of the second direction and the third direction being perpendicular to the first direction.