The acid-base amphoteric polymer is promising for the application in high-temperature proton exchange membrane fuel cells owing to their high proton conductivity even under anhydrous states and at high temperature [1].In this work, we designed a novel acid-base amphoteric proton conducting material by tethering phosphonic acid and 1,2,3-triazolyl groups to the backbone of polysulfone via density functional theory calculations [2,3].