The present invention relates to information retrieval and more particularly to recognize the person's voice by the user and the search and select desired word relates to the speech recognition, information retrieval system and method for providing the search information to the user, present for this purpose invention is the information for converting the speech recognition in the speech recognizer, a speech recognition unit for the recognition of the voice input from the voice input, an audio input for receiving speech to text search for information retrieval unit, and an information retrieval unit It includes an information output for outputting the retrieved information.