The invention relates to a lipidosome medical composition which uses methylprednisolone aceponate as an active component, and a cyst diameter of lipidosome is smaller than 800 nm. The composition comprises 0.025 percent to 0.2 percent of methylprednisolone aceponate as the active component, 0.5 percent to 6 percent of phospholipid, 0 percent to 1 percent of lipophilic additive, 0.01 percent to 1 percent of antioxidant which is used for preserving the medical composition, a pH buffering agent which is used for retaining the pH value from 5 to 7.5, 3 percent to 15 percent of humectant, 20 percent to 30 percent of oil phrase component, 0.01 percent to 0.1 percent of antimicrobial preservative and the balanced of water. The methylprednisolone aceponate lipidosome cream is used for treating skin diseases of human beings or animals.