Method for preparing bamboo fungus polysaccharide-zinc chelate and use thereof

Disclosed is a method for preparing a bamboo fungus polysaccharide-zinc chelate. The method comprises the following steps: (1) extracting the bamboo fungus polysaccharide; (2) separating the bamboo fungus polysaccharide; (3) purifying the bamboo fungus polysaccharide; (4) adding an inorganic zinc source into the bamboo fungus polysaccharide for a chelation reaction; (5) ethanol precipitation; and (6) lyophilization, thereby obtaining the bamboo fungus polysaccharide-zinc chelate. The bamboo fungus polysaccharide-zinc chelate is used for preparing zinc-replenishing health products and drugs, and the chelate also has anti-tumour biological activity.