The utility model discloses a dry-mixed mortar storage tank metering control device. A cabinet body is internally provided with a leakage protector, a surge protector, a first fuse, a second fuse, a phase sequence protector, a grounding bar, a time relay, an alternating current contactor and a thermal relay; the outer side of the cabinet body is provided with a power input plug and a plurality of output plugs; a cabinet door is provided with a weighing display control instrument and a plurality of switches; the grounding bar is connected with the leakage protector; the leakage protector is connected with the weighing display control instrument through the first fuse; the power input plug is connected with the phase sequence protector; the phase sequence protector is connected with the leakage protector through the surge protector; the phase sequence protector and the surge protector are connected with the time relay through the second fuse; the time relay is connected with the alternating current contactor; all the switches are connected with the alternating current contactor; and the alternating current contactor is connected with all the output plugs through the thermal relay. Materials in a storage tank can be measured through the weighing display control instrument, and a stirring device, a water adding device and a vibrating device can be controlled through all the switches.