There are disclosed a system and method for providing a word search service based on message according to the present invention. The system for providing a word search service based on message according to the present invention includes a database which is equipped with a plurality of data modules and registers sentence data and word extracted from the sentence data in each data module equipped to manage the sentence data and the word; and a service server which, if receiving a search word from a user terminal, broadcasts the received search word to all data modules and is provided with a search result from each of all data modules in response to broadcasting and thereafter provides the provided search result to the user terminal.