Microwave assisted extracted crofton weed volatile oil

The invention relates to a microwave assisted extracted crofton weed volatile oil which belongs to the technical field of natural plant extraction products. The crofton weed volatile oil is obtained by adopting the following steps of: putting crushed matters of the overground parts of crofton weeds in a glass distilling flask, adding 1-10 times of distilled water in weight for soaking the crushed matters for 0.1-8 hours, placing the distilling flask in a microwave extraction device for continuous extraction for 5-200 minutes, wherein the microwave extraction device has the working frequency of 915MHZ or 2450MHZ and the working power of 50-3000W, extracting distillate for 1-3 times with 10-100mL of diethyl ether or normal hexane, dehydrating by 1-25g of anhydrous sodium sulfate after combining diethyl ether or normal hexane extract liquors, reducing pressure to remove the diethyl ether or normal hexane at 20-70 DEG C, and obtaining the crofton weed volatile oil. The crofton weed volatile oil has the beneficial effects that the crofton weed volatile oil is obtained by using the microwave assisted method, and the yield of the volatile oil is obviously higher than that of the volatile oil obtained by a traditional steam distillation method.