Preparation method of bombax ceiba three-dimensional dried flowers

The invention discloses a preparation method of bombax ceiba three-dimensional dried flowers. The preparation method comprises following steps: (1), pretreatment, wherein fresh bombax ceiba flowers are immersed in a color retention agent so as to maintain original color and quality of bombax ceiba flowers in subsequent drying processes, and the color retention agent is a mixture of citric acid and glycerin; (2) embedding, wherein gaps of the bombax ceiba flowers processed via step (1) are filled with degreasing cotton, the whole bombax ceiba flowers are coated with degreasing cotton, and the obtained bombax ceiba flowers are coated with granular silica gel; (3) drying, wherein vacuum freeze drying or refrigerator freeze drying are used to dry the coated bombax ceiba flowers so as to remove water in the bombax ceiba flowers; and (4), the granular silica gel and the degreasing cotton are removed so as to obtain the bombax ceiba three-dimensional dried flowers. The preparation method is used for preparing the bombax ceiba three-dimensional dried flowers; original shape, color, texture, softness, and straight shape of the bombax ceiba flowers are basically maintained; the bombax ceiba three-dimensional dried flowers can be further made into bombax ceiba three-dimensional dried flower souvenirs in forms of single flower, flowering branch, or other forms; and supply of the bombax ceiba flowers all year round becomes possible.