Abstract: A document search system and a method are provided to enable a writer (document provider) of a document to detect metadata, which is included in web/WAP documents, and to offer summary or detailed information on the corresponding product (including multimedia content), which is indicated by the metadata, to a document reader. According to the present invention, a client detects the metadata inserted into the corresponding document from the document that is written by the document provider, extracts a reference value, demands production information corresponding to a product ID, to a serer to collect the product information and offers the product information to the document reader. Additionally, the client collects the reference value and information on the document reader who reads the document, into which the metadata is inserted, and stores the collected data in the server.