Ever since Enryaku-ji Temple was founded on Hienoyama, Oyamakui no kami, as the god of the land, has been a guardian deity of the Tendai Sect and Enryaku-ji Temple; and a mountain-king sect based on him has spread in the area.
延暦寺が日枝山に開かれて以降、大山咋神は地主神として天台宗・延暦寺の守護神とされ、大山咋神に対する山王信仰が広まった。