The invention relates to the field of food, and in particular relates to a rose donkey-hide gelatin cake and a preparation method thereof. The rose donkey-hide gelatin cake is characterized in that the rose donkey-hide gelatin cake is prepared from the following raw materials in parts by weight: 8-25 parts of re-petal red rose fresh flowers, 5-15 parts of dry re-petal red roses, 10-35 parts of donkey-hide gelatin, 20-45 parts of black sesames, 10-35 parts of walnut kernels, 8-20 parts of crystal sugars, 28-100 parts of white granulated sugars and 10-30 parts of yellow wine. By the food, the rose petal in the product can be clearly seen, the color of the rose petals is reserved; the rose is organically combined with the donkey-hide gelatin, so that a new formulation of the rose and the donkey-hide gelatin is researched, and the donkey-hide gelatin drives the rose to develop so as to widen the domestic and foreign markets of Pingyin rose; and the food overcomes the defects of inconvenience in use of the rose and the donkey-hide gelatin, can be eaten after the package is opened, and is delicious and convenient to carry, transport and store, and solves the problems that the donkey-hide gelatin is difficultly boiled due to needs of being crashed and melted by heat, is inconvenient to orally take and is not good in taste.