The invention discloses a brewing locking device of a coffee machine and the coffee machine provided with the brewing locking device. The brewing locking device of the coffee machine comprises a lower brewing head and an upper brewing head at least one part of which is arranged above the lower brewing head, wherein the upper brewing head is reversibly hinged to the lower brewing head between the opening position and the closing position, the upper surface of a first end part, deviating from the hinged part of the upper brewing head and the lower brewing head, of the lower brewing head inclines downwards in the direction deviating from the hinged part, the lower surface of a first end part, deviating from the hinged part, of the upper brewing head is adaptive to the upper surface of the first end part of the lower brewing head, a brewing cavity is arranged at the first end part of the lower brewing head, a needle tube extending downwards and corresponding to the brewing cavity is arranged on the first end part of the upper brewing head, at the closing position, the upper brewing head covers the brewing cavity, and the lower end of the needle tube is inserted into the brewing cavity. According to the brewing locking device of the coffee machine provided by the embodiment of the invention, a user can conveniently take down the brewing cavity, and thus the brewing locking device is convenient to use.