PROBLEM TO BE SOLVED : To establish a pioneering processing system for computer society by actualizing the schedule unified management of actions by respective applications or declarations and registration to law courts, the nation, prefectures, the Legal Affairs Bureau, tax offices, etc., and accompanying operation implementation and its history by regarding the greater part regarding judicial administration.SOLUTION : In the judicial action database system, judicial action information such as register information, trial information and law action information are integrated in units of a document such as declaration forms for every kind as case numbers, grouped and discriminated by giving group numbers, and judicial actions consisting of the persons concerned, persons in charge, clients, real estate locations, jurisdiction, credit, law actions, etc., are itemized as to the document such as the declaration forms and operation kinds and time information are attached to respective pieces of the itemized information, then relative information are chained in crisscross by using them as index keys to constitute a judicial action relational database, thereby performing instantaneous retrieval among the items.