Disclosed are a method for transmitting and receiving a traffic indication map (TIM) in a wireless communication system and a device for supporting the same. More particularly, the method for transmitting a traffic indication map comprises the step of transmitting a TIM to a STA through a beacon frame, wherein the TIM includes: a block bitmap field for indicating a subblock including a STA in which buffered downlink data exists for respective N (N are two or more natural numbers) blocks; and a block control field for indicating an encoding method for the bitmap field.