To quickly and exactly check the same merchandise whose transaction destination and mail is different.

An article check master file 23M is formed so that the same merchandise whose transaction destination and mail are either or both different can be stored as merchandise whose kind is apparently different. An article checking means 20 is provided with a received merchandise designation inputting means 27, all kinds of merchandise list display controlling means 21 and 22, each kind merchandise selecting means 24, and the number of selected kind of merchandise inputting means 24. When merchandise is designated, all kinds of merchandise including the merchandise whose transaction destination and mail are either or both different stored in the article check master file 23M are displayed as a list on a display part 25, and the number of the actually received selected kind of merchandise is inputted so received merchandise information can be prepared. Then, this received merchandise information is compared with the article check, data of the article check master file 23M so that the article check can be executed.