To clarify the experience in clinical practice of students at Osaka University Medical School, a questionnaire survey was performed according to the International Classification of Primary Care. More than half of the students had observed only 6 of the 23 reasons for seeking primary care such as headache and hypertension but had not experienced 17 of the 23 reasons, such as cough and abdominal pain. Most students had observed malignancy and chronic diseases, but more than half had only knowledge of 54 of 105 diseases such as appendicitis. In conclusion, medical students' experiences in clinical practice are not well balanced.