Disclosed are an apparatus and a method for limiting a communication range of a fixed wireless terminal. The method comprises the steps of generating and radio-transmitting communication maintaining data through a transmitting unit in a fixed device; receiving, through a receiving unit of a mobile device, the communication maintaining data transmitted from the fixed device, and judging by a receiving processor whether or not the inputted communication maintaining data corresponds to that stored in the receiving processor; outputting a communication permitting signal from the receiving processor to a CPU when the inputted communication maintaining data corresponds to that stored in the receiving processor, to maintain communication; and outputting a communication forbidding signal from the receiving processor to the CPU when the inputted communication maintaining data does not correspond to that stored in the receiving processor, to interrupt communication.