Abstract: The present disclosure pertains to the technical field of vitamin K2, and relates to a vitamin K2 microcapsule, a preparation method thereof, and use thereof in the manufacture of a medicament for preventing and treating cardiovascular and cerebrovascular diseases. The vitamin K2 microcapsule contains the following components by weight: 0.001 to 10 parts of vitamin K2, 5 to 30 parts of polyunsaturated fatty acid source, 0.1 to 10 parts of vitamin E-polyethylene glycol succinate, 50 to 95 parts of water-phase wall material and 0.01 to 10 parts of antioxidant, the polyunsaturated fatty acid source contains an ?-6 source and an ?-3 source, and the antioxidant is a water-phase antioxidant and/or an oil-phase antioxidant. The vitamin K2 microcapsule prepared by the method of the present disclosure has good water solubility, good stability and high bioavailability, can significantly improve the preventive and/or therapeutic effects on cardiovascular and cerebrovascular diseases, and has broad application prospects.