The present application provides a method for determining a random access resource by a terminal in a wireless communication system, the method comprising: receiving, from a base station, configuration information corresponding to a synchronization signal block (SSB) including a SSB index, a random access preamble index and a random access channel mask index; determining a random access resource based on the SSB index and the random access channel mask index; determining a random access preamble based on the random access preamble index; and transmitting, to the base station, the random access preamble on the random access resource.