Abstract: Up till now, the effects of the water adhesion of superhydrophobic coating on its corrosion resistance and antibacterial behaviors are not clear. In this study, superhydrophobic coatings with different water adhesion were successfully fabricated by spraying paints with different percentages of poly (ureaformaldehyde) nanoparticles (PUF NPs) on the Q235 substrate. The electrochemical results showed the lowadhesion superhydrophobic coating with the sliding angle less than 10° exhibited higher charge transfer resistance and lower corrosion current density than the high-adhesion superhydrophobic coating with the sliding angle of 175°. It suggested that the low-adhesion superhydrophobic coatinghad better corrosion resistance compared to the high-adhesion superhydrophobic coating. The crystal violet staining result revealed that the superhydrophobic coatings with high-adhesion and low-adhesion both could significantly restrain the adhesion of P. aeruginosa compared to Q235 substrate, and the superhydrophobic coating with low-adhesion exhibits a more excellent antibacterial capability at the antibacterial rate of 70.3%.