In this application, a method for configuring a resource by a terminal for direct communication between terminals in a wireless communication system is disclosed. More specifically, the method comprises a step of selecting a resource for transmitting a direct communication signal between terminals out of a set of resources including a plurality of resource units reserved for the direct communication between terminals, and wherein the selection step includes a step of selecting a resource unit for the direct communication between the terminals on an assumption that the plurality of resource units included in the set of resources are available resource units for direct communication between the terminals.