Phosphate is an important multifunctional crystal material with broad application prospects in catalysis, photoluminescence, gas storage and separation. In recent years, many phosphate compounds and their derivatives have been used in the study of proton conducting materials. In this paper, the mechanism of proton conduction is briefly introduced. From the operating temperature, the phosphate is divided into two categories with 100 ℃ as the demarcation point. The research progress of phosphate as proton conducting material is introduced, and the challenges faced by phosphate as proton conduction material are prospected.