To prevent erroneous administration by checking the kinds and amounts of medicines, whether a patient is the very person, etc., when a doctor makes a clinical card, when a pharmacist prepares medicines according to the clinical card, and when the prepared medicines are administered to the patient.

A patient bar code A and a bar code 2 representing the kinds and amounts of medicines to be administered are stuck on a clinical card 1 and the pharmacist when preparing medicines reads the bar code A added to the clinical card 1 and bar codes 6 added to containers 4 of medicines and performs retrieval from a database on a server 10 to compare the contents of both with each other by a 2nd terminal device 30. Further, a patient bar code B provided near the bed of a patient 7 is read by a portable terminal device 40 and the patient bar codes A and B are compared with each other to decide whether or not the patient is the very person.