To provide a forming method for new design paint film which has quality feeling like an agate or a jade and deep solid like paint color.

A forming method for paint film which paints metalic base paint with brilliant pigment, paints white clear paint on it by wet-on-wet method, and after that, forms compound paint film by heating them. This method features that metallic base paint contains aluminum brilliant pigment having an average particle diameter (D5) 4.8-7.0 μm and aspect ratio 1-50, and titanium like white pigment.