Essentially, the electrocatalytic ORR process involves three crucial steps: (1) diffusion and adsorption of O2 on the catalyst surface, (2) hydrogenation of the adsorbed O2 by H + /e -to form products, and (3) desorption and diffusion of the final products on the catalyst surface. Regarding the hydrogenation degree of O2 adsorption, the ORR primarily involves two electron pathways leading to either H2O2 or four electron pathways resulting in H2O as products. During electrocatalytic process, both 4e -ORR and 2e -ORR are competing reactions, highly influenced by the adsorption configuration and activation degree of O2. Based on the above analysis, compared to nonmagnetic catalysts, spin-order of ferromagnetic support plays an important role in the adsorption of O2. Thus, the relationship between the catalytic performance and magnetic properties on different catalysts with different converge was further explored, and the specific paths of 2e - ORR and 4e -ORR in different magnetic states of the above three catalysts were studied.