Abstract: Pecan oil microcapsules were prepared by coacervation encapsulation method.After the single factor experiment with arabic glue, gelatin, pecan oil, curing agent and p H as the research factors, the orthogonal test was used to optimize the prescription of pecan oil microcapsule with oil-embedding rate as the index.The optimal prescription of the pecan oil microcapsule was as follows: 10% Arabic gum, 15 m L gelatin, 0.6m L pecan oil, 6m L curing agent and p H4.0.The oil-embedding rate was 83.9% ± 0.24% under the optimal preparation condition, and the morphology was regular observed by inverted microscope method, with the average particle size of 1.423 μm and Zeta potential of-38.2 m V determined by Malvern laser granularity instrument.The results of stability test showed that the oil-embedding rate was stable under high temperature and strong light, which was conductive to further processing and storage.