This paper studied the hypnotic and sedative effect of three kinds of aromatic essential oil, L-linalool and two kinds of blended oil which contained L-linalool ( No.1 essential oil, L-linalool ∶ lavender essential oil ∶ Yilang Yilang oil ∶ cedar oil=1 ∶ 2 ∶4∶ 3;No.2 essential oil, L-linalool ∶ lavender essential oil ∶ Yilang Yilang oil ∶ cedar oil=5 ∶ 3 ∶ 1 ∶ 1) . Spontaneous locomotor activity, sleep latency and time were monitored with sleeping induced by pentobarbital sodium. Spontaneous locomotor activity results showed that al...