The invention discloses a high-quality olive oil processing technology which comprises the following steps: S1, selecting mature olive, cleaning, airing, peeling, shelling, and grinding into paste to obtain olive kernel pulp; S2, soaking the olive kernel pulp in a mixed solution composed of a green tea concentrated solution and a demulsifier, and performing ultrasonic treatment to obtain pretreated olive kernel pulp; S3, treating in microwave vacuum equipment, performing cold pressing through a hydraulic cold pressing machine, and performing carbon dioxide supercritical extraction to obtain virgin olive oil; S4, cooling the virgin olive oil, stirring and crystallizing, and removing uncrystallized and solidified olive oil on the upper layer to obtain refined olive oil; S5, adding zingiberone alcohol and avocado oil into the refined olive oil, carrying out ultrasonic oscillation and centrifugal separation, and collecting an oil material; and S6, carrying out vacuum filtration on the oil material. The processing technology is simple, safe and environment-friendly, the oil yield is increased, addition of chemical substances and long-time high-temperature treatment are avoided, the nutritional value in the olive oil is effectively reserved, and the anisidine value of the olive oil is reduced.