Multifunctional pressure sore prevention bed

The utility model discloses a multifunctional pressure sore prevention bed which structurally comprises a bed frame, the bed frame comprises a mattress layer and an adsorption layer located below the mattress layer, the mattress layer is provided with a plurality of blocks capable of moving up and down, every two blocks are paired, a clamping piece used for connecting the two blocks is arranged between each pair of blocks, the adsorption layer is provided with a plurality of lifting devices, and the lifting devices are arranged on the adsorption layer. When the block body needs to be switched to be used, the adsorption layer adsorbs the block body through the lifting device and controls the block body to ascend and descend vertically, assembling cavities are formed in the positions, located on the two sides of the mattress layer and the adsorption layer, of the bed frame, massage devices used for massaging the affected part of a patient are arranged in the assembling cavities, and the massage devices can stre