This paper aims to explain the time and regional feature of junior high school consolidation process, after regulating the relation of transition of the number of schools and consolidation based on the database about the number of students of junior high school and established and closed schools in 1949 2010 in Chugoku region. Although the definite number reduction of students was observed in city areas, there were comparatively little consolidation of schools until 2010. However, in the mountainous area, the rapid reduction of the number of students continued after rapid economic growth, consolidation of junior high schools were not avoided.