A control apparatus for a dryer, which can provide a connection for a detecting circuit adapted to determine a clogging degree of the dryer, is disclosed. The control apparatus includes a power supply circuit comprising a heating coil arranged in a heater case, and a temperature control member mounted to the heater case, the temperature control member receiving power, and supplying the received power to the heating coil, a microcomputer for controlling an operation of the dryer, and a connecting line for connecting the power supply circuit to the microcomputer. Through the connecting line, the microcomputer can detect a state of the power supply circuit.