Presenting System of Keyword Using depth of semantic Method Thereof

The present invention relates to a keyword preventing system for presenting a plurality of keywords associated with a keyword received from a client. The keyword preventing system based on a semantic depth structure includes a communication unit connected to a client through a network; an interface unit configured to provide a search interface for receiving a keyword from the client and presenting a plurality of candidate keywords; a search DB configured to store a plurality of search results and a plurality of candidate keywords, which constitute the search interface; a semantic depth DB configured to, store a semantic depth structure indicating a semantic distance between keywords according to candidate keywords; and a semantic depth engine configured to support a function of drawing a plurality of associated keywords from the search DB based on the keyword received from the client, forming recommended keyword groups based on the semantic depth from the associated keywords using the semantic depth DB, and presenting a list of recommended keywords for each semantic depth stage by stages according to a user′s selection.