Abstract: Proton exchange membrane fuel cell (PEMFC) is a way to use hydrogen energy efficiently. Bipolar plate (BP) is an important component. Metal bipolar plate has attracted the attention of many researchers because of its advantages of high mechanical strength, good electrical and thermal conductivity, and mature processing technology. Titanium and titanium alloy materials have the characteristics of high mechanical strength, acid corrosion resistance and non-toxic effect on catalysts, and have great potential in the application of BP. This paper summarized the research progress of coating modification on titanium-based bipolar plates, described the application of a variety of coating materials, including metal coating, carbon-based coating, transition metal nitride coating and polymer coating, and also summarized the coating preparation methods and the characteristics of various coatings in terms of electrical conductivity, corrosion resistance and hydrophobic properties. This paper provided a reference for the process design of titanium-based bipolar plate material modified coating for PEMFC.