Abstract: Objective In the context of “dual carbon” goals, methanol, as an important liquid hydrogen storage carrier, has high octane ratings and energy density, demonstrating significant development potential. However, the corrosive nature of methanol on metal materials has constrained the development of methanol pipeline transportation technology. Therefore, studying corrosion issues in methanol and methanol-gasoline blending transportation systems is critical to the manufacturing and safe operation of “methanol-hydrogen” energy infrastructure. Methods Based on the current research on methanol and methanol-gasoline blends and their effects on metal corrosion both domestically and internationally, this paper summarizes the corrosion mechanisms of methanol, the corrosion patterns of methanol and methanol-gasoline blends on different metals, and outlines the future development directions for corrosion research in methanol and methanol-gasoline blend systems. Results Methyl alcohol corrosion primarily manifests as electrochemical corrosion and stress corrosion cracking (SCC). The methoxide anions (CH₃O⁻) generated by the dissociation of methyl alcohol react with metals to form a methyl alcohol passivation layer, which dissolves under high potential to induce electrochemical corrosion. Stress accelerates intergranular corrosion and the propagation of intergranular/extragranular cracks in metals exposed to methyl alcohol, thereby triggering SCC. Chlorides and sulfides added to methanol promote the corrosion process, while water impurities exhibit a threshold effect, meaning that corrosion occurs rapidly or is inhibited when water content is less than or greater than 0.5%. Increasing the blending ratio enhances the corrosion behavior of methanol gasoline on metals, and compared to steel, aluminum, and cast iron, brass and bronze exhibit higher corrosion sensitivity in methanol gasoline.Conclusion Given that the mechanism behind the corrosive behavior of methanol and methanol-gasoline blends is still unclear in complex transport environments , the following recommendations are proposed: ① Use experimental and simulation methods to study the corrosion behavior and intrinsic mechanisms of methanol and methanol-gasoline on metals under the influence of multiple impurities; ② Based on actual methanol pipeline transportation environments and material failure conditions to conduct critical failure threshold testing and corrosion risk assessment of pipe materials.