The invention relates to a food having an onion sulfur-containing compound and flavones. The food is prepared from the following components in parts by weight: 100-200 parts of onion oil microcapsuleparticles, 50-150 parts of apocynum venetum flavonoid microcapsule particles and 50-150 parts of artemisia integrifolia flavonoid microcapsule particles through microcapsule embedding, dry granulation, size stabilization and tabletting under the pressure of 80-100 kilonewtons in sequence according to a conventional method. The onion oil is compounded with the apocynum venetum flavone extract and the artemisia integrifolia flavone extract, so that the food has better effects of reducing blood fat and blood pressure, the value of the food is improved, the food is easy to industrially implement,and the product has important significance in improving the additional value of resources and promoting the local high-tech biological industry.