To provide a decorative panel for a building with a decorative portion in a three-dimensional form and a lower supporting frame where no dust stay.

A decorative panel member 5 includes a preset length of metal decorative panel material having a specified length, the panel material being decorative portions 2 at both cross ends and connection portions 3 at its middle, the connection portions 3 having cutouts intermittently formed at constant longitudinal intervals, the decorative portions 2 on both sides of the cutouts being bent and enlarged in mutually opposite directions, and annular patterns formed via the connection portions 3 in the longitudinal direction. The decorative panel members 5 with the annular patterns being joined in the cross direction or being spaced from each other as predetermined clearance are provided in parallel to form a decorative panel mainbody which has upper and lower ends, at least, supported by an upper supporting frame 16 and a lower supporting frame 17.