The invention discloses snow pear-osmanthus fragrans jam which is prepared from the following raw materials in percentage by weight: 30-40% of snow pears, 20-30% of high fructose syrup, 10-20% of water, 20-30% of white granulated sugar, 0.6-0.8% of osmanthus fragrans, 3-10% of a thickener, 0.2-0.8% of citric acid, 0.2-0.8% of malic acid, 0.05-0.5% of sodium citrate, 0.01-0.1% of a preservative, 0.001-0.01% of a pigment, 0.1-0.8% of pear essence and 0.1-0.8% of osmanthus fragrans essence, wherein the ratio of the snow pears to the osmanthus fragrans is 50:1. The invention further discloses a preparation method and application of the snow pear-osmanthus fragrans jam. During preparation, the snow pears with health efficacy is added for being matched with the fresh osmanthus fragrans, so that the snow pear-osmanthus fragrans jam is bright in color and lustre, fresh in fragrance, fine in taste, sour and sweet, and delicious; through scientific compatibility of the snow pears, the osmanthus fragrans and other raw materials, not only are the double fragrant tastes of the snow pears and the osmanthus fragrans kept, but also the tastes and the efficacy of the osmanthus fragrans and the snow pears are perfectly combined; meanwhile, the health function of moistening the lung to arrest cough is improved. Therefore, the snow pear-osmanthus fragrans jam has high values of nutrition and health, and serves as environment-friendly, healthy and natural food with a novel taste.