Process for efficiently extracting aromatic plant essential oil

The invention discloses a process for efficiently extracting aromatic plant essential oil, which comprises the following steps: crushing aromatic plants, putting the crushed aromatic plants into a microwave-assisted extraction device filled with wave-absorbing material particles, carrying out microwave heating, adopting a step-by-step gradient heating temperature control mode, recording the whole process of maintaining the constant temperature at each heating stage and the heating end point as an extraction stage, in each extraction stage, microwave is heated at set power, extraction is performed until no gas or liquid is generated, the constant temperature of the first extraction stage is kept at 100-250 DEG C, and the constant temperature of the last extraction stage is kept at 400-500 DEG C; after the plant powder is heated, distilling steam is condensed and collected to obtain an extraction product, and then the extraction product is dewatered to obtain aromatic plant essential oil. The method provided by