The invention discloses a production process of tea oil, which comprises the following steps of: S1, culturing; S2, selecting seeds and grafting; S3, cultivating and managing; S4, shaping and managing; S5, picking after mature; S6, airing and drying; S7: screening; S8: cold-pressing; S9: coarse-filtering; S10, fine-filtering; S11, filling. According to the invention, fresh and green cogongrass isadopted for cultivation, so that more nutrient components enter an oil tea tree body through a green leaf fertility increasing mode, an oil tea tree is mainly embodied on grafting, grafting is carriedout from black seed buds, the gene of the oil tea and the nature of the oil tea are retained, and an original ecological inclined pit type cultivation method is used, the tea seeds are pressed by using a natural cold pressing method, so that the quality of the tea seed oil is improved and innovated, the high-nutrition oil tea fruit grows, fresh and cool tea oil is obtained by cold pressing, the tea seed oil has strong edible function to human bodies, the total content of unsaturated fatty acid reaches 88.8%, the quality is higher than that of olive oil, the high-end edible oil is cultivated.