Microwave-assisted solvent extraction (MASE) essential oils from Homalomena Occulta. The chemical composition of the oil was identified using GC/MS technique. The optimum conditions are obtained: petroleum ether as solvent, the microwave power 600W, extraction temperature 60℃, extraction time 25min. 63 constituents were identified total and The main chemical constituents were Linalool (23.411%), 7-Acetyl-2-hydroxy-2-methyl -5- isopropylbicyclo[4.3.0]nonane (5.222%), 4-Terpineol (3.971 %). Comparison with the conventional hydro-distillation (HD), it was found that MASE save time and higher yield but no significant differences of the chemical composition. Therefore, MASE was a complete substitute for HD, high efficiency and energy savings technology.