Enameled steels feature in attractive appearance, easy cleaning and corrosion resistance. They have been widely used in daily life, industrial production, architectural decoration and other applications. However, enameled steels are often subject to fish-scaling, which leads to failure of enamel coatings. The formation mechanism of fish-scale was introduced. In addition, the effects of material composition and processing technology on precipitated phase type and quantity, grains grade and fish-scaling resistance were analyzed. Irreversible traps were added by improving the composition of enameled steel, planning rational rolling and annealing processes. In this way, hydrogen storage property of enameled steels was improved and occurrence of fish-scaling was reduced. Moreover, development status of evaluation technologies concerning fish-scaling resistance home and adbroad as well as most common methods used in evaluating fish-scaling resistance were introduced as well.