A kind of portable stamping machine includes a grip part, a control valve, a control unit and the water spray portion sequentially connected. The grip part includes a water-guiding hole, a conduit pipe and one first joint portion. The control valve includes second joint portion at affixed first joint portion, one valve body for wearing what second joint portion to move between the one water supply position of the second joint portion what and a closed position, the valve body include that the what water supply position is connected to the conduit pipe and the water outlet of water inlet and a conducting what water inlet that the what closed position is covered by second joint portion. The control unit is arranged and the affixed what control valve, has a first connecting portion； And the water spray portion includes one and the affixed second connecting portion of the first connecting portion and a water jet. By the first connecting portion and the second connecting portion of special designing, which can load and unload the water spray portion by the what control unit rapidly.一種便攜式沖牙機，包含依序連接的一握持部、一控制閥、一控制部及一噴水部。該握持部包含有一導水孔，一導水通道以及一第一接合部。該控制閥包含有一固接該第一接合部的第二接合部，一穿設於該第二接合部以相對該第二接合部於一供水位置以及一關閉位置之間移動的閥本體，該閥本體包含有一於該供水位置連通該導水通道而於該關閉位置被該第二接合部遮蔽的進水口以及一導通於該進水口的出水口。該控制部套設並固接於該控制閥，具有一第一連接部；而該噴水部包含有一與該第一連接部固接的第二連接部及一噴水口。藉由特殊設計的該第一連接部及該第二連接部，該便攜式沖牙機可迅速於該控制部裝卸該噴水部。
