A message service providing method for a message service linked to a search service and a message server and a user terminal for performing the method are disclosed. The message service providing method includes identifying an instant message input through a message input box of a message application switching from a chat mode to a search mode or a suggested search word selected from suggested search words in a suggested search word list displayed in conjunction with the message input box, transferring, to a search server, a search request for a search word including a whole or a portion of the identified instant message or suggested search word in response to a user input provided to the message application, receiving search result data derived through the search word.