5-Hydroxymethylfurfural is an important chemical raw material. Its molecule contains an aldehyde group and a hydroxymethyl group, which can be used to synthesize many useful compounds and new polymer materials through hydrogenation, oxidative dehydrogenation, esterification, halogenation, polymerization, hydrolysis and other chemical reactions, Resin plastics, diesel fuel additives, etc. In particular, the bio-based PEF polyester based on furan dicarboxylic acid has demonstrated many characteristics superior to petroleum-based PET (polyethylene terephthalate).