To support medical bill check and a work accompanied with the medical bill check by reducing the labor of a work to manually input medical bill contents.

A server 11 reads a medical bill recorded in an external storage media 16, and prepares a link key for each medical bill based on the contents of the medical bill, stores the medical bill in a medical bill contents DB 115 by adding the link key to the medical bill, and prints it by a printer. After the printed medical bill is checked, the printed medical bill is read by a scanner OCR 14, and only the link key is character-recognized, and read, and the image picture of the printed medical bill is displayed at a client 12, and confirmed by an operator. When correction check is not detected, the image picture is abandoned, and in the other case, a decision numerical rating on the printed medical bill is inputted, and the decision numerical rating is additionally written in the medical bill in the medical bill contents DB having the recognized link key, and the image picture is stored in a picture DB 116.