A carotenoid oil suspension and preparation method thereof are provided. The method includes the following steps: a) mixing carotenoid with organic solvent, heating the mixture to dissolve the carotenoid sufficiently to obtain carotenoid solution b) introducing the carotenoid solution obtained in step a) into a vegetable oil solution stirred in high speed by spraying, meanwhile recovering the organic solvent generated during spraying under vacuum condition, then, simultaneously completing recycling and spraying, thereafter, obtaining carotenoid oil suspension wherein, the carotenoid oil suspension comprises a carotenoid crystal with an average particle size of less than 5µm. The method is applicable in industrial scale with continuous operation and increased efficiency without additional carotenoid crystal grinding processes, and decreases the degradation of carotenoid during the preparation process of carotenoid oil suspension.
