The invention discloses healthy chili oil and a preparation method thereof, and the healthy chili oil is characterized by being prepared from the following raw materials by weight: 1-1.2 parts of rhodiola, 0.9-1 part of mulberry, 1.2-1.3 parts of pipewort, 1.1-1.3 parts of plumeria rubra, 0.8-1 part of loquat flower, 1-1.1 parts of dickinsia hydrocotyloides franch, 0.9-1.2 parts of climacium dendroides, 2-3 parts of strawberry, 2-3 parts of pear, 8-9 parts of rice vinegar, 50-55 parts of fatty pork, 100-110 parts of salad oil, 40-45 parts of chili, 15-20 parts of onions and7-8 parts of a nutritional additive. The healthy chili oil is unique in flavor, and reasonable and scientific in formula, the added fatty port is fired into pork oil which is rich in vitamin A, so that the healthy chili oil is much rich in fragrance; in addition, the healthy chili oil is also added with a variety of Chinese herbal medicines in the processing process, so that the healthy chili oil has the effects of tonifying Qi, clearing away the lung-heat, benefitting intelligence, nourishing heart, nourishing yin, supplementing blood, improving eyesight and removing nebula.