Proton exchange membrane fuel cell (PEMFC) is regarded as an important tool for building a clean energy society due to its advantages of high power density, low operating temperature, high efficiency, low emissions, and low noise, and has received extensive attention in the past decades. The flow and mass transport of different species in the gas diffusion layer (GDL), the microporous layer (MPL) and the porous catalyst layer (CL) is an important link to understanding the working mechanism of PEMFC, which is crucial to improving the performance of the cells, and has become the focus for many institutions and researchers.