Disclosed is a method and system for providing a mini-map in a chatroom. A mini-map providing method including displaying a first portion in a sequence of contents included in instant messages sent and received through a session corresponding to a chatroom on a message display region of a screen for displaying the chatroom, displaying a second portion that includes the first portion in the sequence of contents on a mini-map display region on the screen for displaying the chatroom, and interacting with the message display region and the mini-map display region may be provided.