To study on utilization of residual orange peel in industrial production and increase of essential oil yield from orange peel, essential oil from yellow juice and residual orange peel were extracted inCitrus sinensis var. Valencia using steam distillation after grinding peel. Then the yield of essential oil extracted from yellow juice and residual orange peel was measured and their compounds were compared, andessential oilextracted from tangerine peel and tangerine endocarp were used as control. The results shows that the essential oil yield from orange peel can be increased (11.55%) by recycling residual orange peel, and the compounds of essential oil were different from yellow juice and residual orange peel. Compared with essential oil extracted from oil-water mixture，relative content ofketonecompound, esterscompound, alcoholcompound andaliphatic acid in essential oil extracted from residual orange peel are higher，and relative content ofhydrocarbons and their derivatives are lower.The research shows that by recycling residual orange peel can improve the yield of essential oil, and the odor of essential oil is pleasant.