The purpose of this study was to clarify the reality of medical accident (MA) during clinical practice of nursing student. Out of 90 students, 66 (73.3%) experienced various kinds of MA, and there were the most accidents related to transport of the patient in that. Almost students noticed MA by reaction of the patient, and 54.8% of them did not presented the accident to a university teacher or hospital staff. 83 (92.2%) students learned about MA at a university, but 70% of them deficiency in quality and the number of times for education about it, and it was clear to expect a lecture which consisted of many MA.