Fuente: WIPO "hemp" The invention provides a preparation method of a banana fiber and hemp mattress, comprising the following steps of obtaining fibers from tree trunks that are cut after fruiting of banana trees every year by the following two ways: (1) feeding the tree trunks into a duel-roller machine with roller control for peeling of coarse barks and pectin to obtain the banana fibers; (2) stacking the tree trunks in the open air, naturally fermenting for 35 to 40 days and washing by using water to obtain the fibers; then placing the fibers under natural sunlight for drying or placing in a dryer of 100 to 105 DEG C for drying, and packaging for later use, wherein the moisture regain is 14% or below; then treating the extracted fiber raw material by adopting a biological or chemical treatment method; adding meldable fibers in the treated banana fibers, carrying out opening, impurity removal, carding and net formation, and carrying out hot melting and setting to prepare a blocky banana fiber elastic plate-type material; then according to design requirements, sewing and coating the blocky banana fiber plate-type material by a hemp fabric to finally prepare the banana fiber and hemp mattress. The mattress prepared by the method has the advantages of antibacterial effect and low price.