The invention relates to the technical field of database audit, and aims at providing a quick searching method in a large data volume storage. The method comprises the steps of: storing audit records by using a relational database, wherein each record has a unique ID (identification), and a frequently-used searching character is used as a field; obtaining the audit records and storing through a protocol analyzing module; monitoring the audit record storing condition by using an independent full-text index engine, building a full-text index for the newly-stored audit records, and progressivelybuilding and maintaining a current index, a unit hour index and a unit day index; and searching by using the full-text index and adopting the searching character as a keyword, obtaining a main ID setof the audio records according with the characteristics, and obtaining complete information of all audit records according with the searching characteristics through the main ID set. In the invention, searching attributes are needed to be added for the searching characteristics in a process of establishing the full-text index, and the cost of the full-text index file is smaller than that of the storage of the audio records. Storage capacity and searching performance of a database audio system are greatly improved.