The purpose of this research is to verify the cause which is insufficient of calcium in Japanese people after the graduation from a junior high school. We have investigated ingestion and consciousness of milk and calcium. From July to August 2012, 486 university students in Nagasaki University and their families were surveyed. Contents of this research are about the amount and frequency of intake of milk a week, the reason to drink milk and not to drink milk, the awareness of calcium intake, and recognition of the calcium-rich food.   This investigation revealed that there were 82% of university students and their families those who did not drink milk every day. The reason they did not drink milk was “not in the habit of drinking milk”, “condition of the stomach is bad to drink milk”. And many university students and their families considered milk, dairy products, and small fishes as the food containing much calcium, but they didn′ t eat them. Furthermore, they neither knew other foods containing much calcium nor consumed them. We considered that these things were the cause of insufficient calcium in Japanese people after the graduation from a junior high school.