A fixture applicable for breaking a circuit board includes: a bottom board, comprising a front side and a back side opposite to the front side; a breaking mechanism, disposed on the front side of the bottom board, and comprising a fixing board and a flap board adjacent to the fixing board, an axis line defined between the fixing board and the flap board, the flap board being flapped along the axis line, and the circuit board being placed on the fixing board and the flap board; a first platen, including a first moving device disposed on a side of the fixing board for fixing the circuit board onto the fixing board by the first moving device; and a second platen, including a second moving device disposed on a side of the flap board for fixing the circuit board onto the flap board by the second moving device.