The key platform compound derived from oxidation of HMF is considered as a renewable green alternative to petroleum-based terephthalic acid. In addition, 2,5-furandicarboxylic acid can be used to replace m-phthalic acid, succinic acid, bisphenol A, adipic acid and so on in the preparation of bio-based polymers such as polyester, polyamide and epoxy resin.