The utility model discloses a milk brewing machine. The milk brewing machine comprises a machine shell (b), a water supply device (4) and a mixer (3), wherein the water supply device (4) and the mixer (3) are arranged in the machine shell (b); the water supply device (4) comprises a kettle body (41), a heating disk (42) arranged inside the kettle body (41), and a guide pipe (43) arranged in the kettle body (41); a conductive connection head, a water pump (10) and a water pumping device are arranged on the machine shell (b); the conductive connection head is detachably connected with the heating disk (42); a water outlet of the water pump (10) is communicated with the water inlet end of the mixer (3); the water outlet end of the water pumping device is connected with a water inlet of the water pump (10); the water pumping device is provided with a water inlet pipe which is detachably connected with the guide pipe (43). According to the milk brewing machine provided by the utility model, the water adding operation and the cleaning operation are effectively facilitated.