Abstract: Using peel of Gannan navel orange as experiment material, the volatile components of orange peel were collected using headspace solid phase micro-extraction (HS-SPME) , and the volatile oil from the orange peel was isolated using simultaneous distillation extraction (SDE) . The essential oil from the orange peel was isolated using hydrodistillation (HD) by volatile oil extractor. And the chemical components were identified using gas chromatography-mass spectrometry (GC-MS) . Extraction yields by different methods and components of essential oil, volatile oil, and volatile components of orange peel were compared. Results indicated that the volatile oil yield was higher than the essential oil yield. Limonene was the main component of volatile oil, essential oil, and volatile components. The other components of volatile oil and essential oil were similar. Therefore, differences in compounds varieties and contents between volatile components and volatile oil, essential oil were relatively large. This indicated why volatile oil and essential oil of orange peel smelled similar, but slightly different from fresh orange peel.