Provided are a method for performing, by a user equipment (UE), a role change between a primary cell and a secondary cell in a wireless communication system, and an apparatus supporting the same. The method may include: receiving a configuration and a condition for triggering the role change between the primary cell and the secondary cell; configuring a source cell as the primary cell and a target cell as the secondary cell; determining whether or not the condition is satisfied; and when it is determined that the condition is satisfied, configuring the target cell as the primary cell and the source cell as the secondary cell based on the configuration.