The invention provides a preservation method for fresh cut aralia elata seem through the combination of high-concentration oxygen modified atmosphere packaging and low-temperature storage. The preservation method comprises the first step of selecting, the second step of cleaning, the third step of airing, the fourth step of tidying, the fifth step of bagging, the sixth step of air exhausting, the seventh step of inflating, the eighth step of sealing and the ninth step of storing. According to the method, a high-resistance polyethylene film is adopted as a modified atmosphere packaging bag, gas of the high-concentration oxygen modified atmosphere packaging comprises, by inflating proportion, 75%-95% of oxygen and 25%-5% of carbon dioxide gas, and low-temperature storage is combined after modified atmosphere packaging. The preservation method is applied to the preservation of the fresh cut aralia elata seem, the poisonous effect generated by anaerobic respiration is obviously reduced, meanwhile, the respiration action is reduced, color changing is prevented, moisture evaporation and pest and disease damage infections are reduced, the original unique flavor and the nutrient ingredients of the aralia elata seem are maintained to the maximum, and the shelf life of the fresh cut aralia elata seem is effectively prolonged. According to the technical scheme, the rot, browning and reduction of vitamin C, total phenols and other nutrient ingredients of the fresh cut aralia elata seem are obviously restrained, the hardness and the antioxidant activity of the fresh cut aralia elata seem are improved, the fresh cut aralia elata seem has high appearance quality and sanitary quality, the preservation period of the product is prolonged to 10-12 days from 2-3 days, and the price can be increased by 2 times.