The invention belongs to the technical field of plant aromatherapy essential oils for assisting sleep, and relates to a plant aromatherapy essential oil for assisting sleep, including spruce essential oil, cedar essential oil, juniper essential oil, thuja essential oil and orange essential oil. The present invention adopts refined and purified spruce essential oil, cedar essential oil, juniper essential oil, thuja essential oil and orange essential oil, and natural lavender acetate, and uses the essential oil formula technology to deploy the above essential oil raw materials to make sleep-aiding aromatherapy essential oil , the formula is mature, the technology is stable, green and environmentally friendly, and the use effect is good. The sleep-assisting aromatherapy essential oil obtained by the invention has good sedative, calming and sleep-assisting effects, and can eliminate bad breath in a living room, freshen air, and inhibit bacterial growth.