To increase the number of female students in the department, since 1994 Nagoya Institute of Technology has introduced a female-only recommendation entrance examination in the Department of Mechanical Engineering (Department of Electrical and Mechanical Engineering from 2016). The ratio of female students to all students was shown and the impact of the introduction of female-only recommendation was discussed. It was shown that the introduction of the female-only recommendation entrance examination not only increased the ratio of female students in the targeted department but also across the entire institute. The objective of increasing the number of female students in the department has been achieved.