The present disclosure relates to a steering control apparatus and method. The steering control apparatus includes a first steering control module and a second steering control module. The first and second steering control modules respectively include first and second temperature sensors detecting respective internal temperatures of the first and second steering control modules. The first steering control module can transmit information on a first temperature detected by the first temperature sensor to the second steering control module, and the second steering control module can receive the information on the first temperature and transmit information on a second temperature detected by the second temperature sensor. The first and second steering control modules can transition according to the information on the first and second temperatures, and the first steering control module or the second steering control module can control a steering motor.