Abstract: An improved structure of enamelware which ensures the glaze can be coated homogeneously and tightly onto the surface of the enamelware, characterized in that: the edge portion of the metal substrate is pressed to form a spherical block in cross-section, therefore the surface area of the edge of the enamelware is enlarged, such that the glaze can be homogeneously and tightly coated onto the edge portion of the enamelware to provide the anti-rust function and maintain the beauty of enamel.