PROBLEM TO BE SOLVED : To accurately make a database of description of registered by reading real estate registered items with an image reader. SOLUTION : This system automatically reads rear estate registered items certificate and a registered items epitome issued from a registry office, ownership described in the grade A section of the same object of detailed real estate registered data obtained from online real estate registered data of the Ministry of Justice, i.e., equity right, seizure in the grade A section, conditioned ownership transfer provisionally registered data or the like, a mortgage pledged in a grade B section, a fixed collaterial right and the other rights from the image reader or inputs only items manually, prepares a database file of a real estate equity, etc., performs residual value calculation of the equity, makes the equity and various burden rights attached to the equity a database time sequentially, successively performs automatic analysis and clarifies the situation of rights attached to the equity.