HVOF cermet coatings have been widely used in aviation and marine fields of key components. Those parts often serve in rigorous environment characterized with salt-fog atmosphere. In order to enhance the wear- and corrosion-resistance of those components, two kinds of cermet coating, that is WC-10Co4Cr and Cr3C2-NiCr coating, were prepared by HVOF and then their tribology properties were investigated by a reconstructive friction testing machine equipped with an artificial salt-fog spraying apparatus. As well as, similar research was performed on traditional chrome plating (Cr-plating) for contrasting. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were utilized to characterize the wear surface. The results indicated that various coatings exhibited different wear mechanisms. Cr-plating displayed mainly adhesive-wear mechanism, Cr3C2-NiCr coating displayed both adhesive-wear and abrasive-wear mechanism, while WC-10Co4Cr displayed mainly abrasive-wear mechanism. At the salt-fog atmosphere, liquid membrane was considered as a factor to reduce the friction-coefficient and wear-rate of the coatings. It was also indicatied that when the contacting pressure of the friction pair was increased, the wear-rate of Cr-plating and Cr3C2-NiCr coating are significantly enhanced, but that of WC-10Co4Cr coating is reduced at the opposite way. The phenomenon can ben ascribed to different transformation mechanism of abrasion for various coating at high contacting pressure.