Multifunctional back pack

The utility model discloses a multifunctional back pack comprising a back surface and back straps connected with the back surface; the back straps are arranged in an X shape; a health-care device is arranged on the back surface; the periphery of the back surface is provided with a rainproof apparatus and a device used for storing the rainproof apparatus; the health-care device comprises a plurality of raised massaging points which are distributed on the outer surface of the back surface; the health-care device also comprises a medical magnet; the back surface is provided with an inner layer and an outer layer; and the medical magnet is arranged in the interlayer between the inner layer and the outer layer of the back surface. The rainproof apparatus is a raincoat and soft shielding cloth arranged on the top of the back surface, and the rainproof apparatus is formed by zip fasters and strip-shaped cloth bag, wherein the strip-shaped cloth bag is fixed at the periphery of the back surface, and the zip fasters a