Cement mortar mixer capable of automatically adding mortar

The utility model relates to the technical field of buildings, in particular to a cement mortar mixer capable of automatically adding mortar, which comprises a main shell and a feeding pipe, support legs are fixed at four corners of the bottom of the main shell, a blanking pipe is connected to the bottom of the main shell, a valve is mounted on the blanking pipe, the feeding pipe is arranged on one side of the main shell, and the feeding pipe is connected with the main shell. A feeding pipe is arranged in the main shell, a connecting mechanism is arranged between the feeding pipe and the main shell, a feeding port is formed in one side of the lower portion of the feeding pipe, a discharging pipe is connected to one side of the upper portion of the feeding pipe, one end of the discharging pipe is arranged in the main shell, a motor is installed at one end of the feeding pipe, and bearings are fixed to the two sides of the inner wall of the feeding pipe. According to the stirrer, materials needing to be stirred