Tiger nut (Cyperus esculentus L., TN), is a perennial sedge plant of the family Salicaceae, native to Africa, and has been introduced to China as an emerging crop that integrates food, oil, pasture and forage. The tubers are not only nutritious, but also have medical health functions such as lowering blood pressure, blood lipids and cholesterol. In this paper, the latest research progress of processing non-oil products of Olea europaea was described from several fields, such as Olea europaea staple food products, Olea europaea beverage products, Olea europaea fermented products, and other products. The future of processing development was also outlined to provide reference for the exploitation and utilization of Olea europaea tubers and its oil extraction by-products.