A full-automatic effluent treatment control device comprises a field controller. The field controller is connected with a water pump control box, an electrically-operated-valve control box, a flowmeter, a liquidometer, an online turbidity meter, a pressure transmitter, a sludge quantity sensor and a dosage detection meter of input equipment, and is also connected with a water pump control box, an electrically-operated-valve control box and an electric actuating mechanism of output equipment. A remote monitoring computer is connected with the field controller through a wired network or serial port. The remote monitoring computer and a cellphone terminal are mutually connected through a wireless network. By the full-automatic effluent treatment control device, collected information is fully utilized for comprehensive comparison and judgment, calculation is processed efficiently and reasonably, dosage is reasonably controlled while quality of effluent treatment is guaranteed, and secondary pollution is avoided; a fixed-type and moving-type combined mode is adopted, so that comprehensiveness and convenience in monitoring are guaranteed; a function displaying initial causes of faults brings great convenience to maintenance staff.