Provided are a method for determining cell coverage for a device-to-device (D2D) operation performed by a terminal in a wireless communication system, and a terminal using the method. The method comprises: receiving a specific signal which is repeatedly transmitted from a cell; determining whether successful detection of the specific signal is maintained for at least a specific amount of time; and declaring that the specific signal is beyond the cell coverage, when the successful detection of the specific signal is not maintained for at least the specific amount of time.