Novel decorative plate internal corner profile

The utility model discloses a novel decorative plate internal corner section bar which comprises a first bottom plate and a second bottom plate, extending lines of one ends of the first bottom plate and the second bottom plate are perpendicularly connected in an intersecting mode to form an internal corner, a first clamping plate and a second clamping plate are arranged on the first bottom plate,and a third clamping plate and a fourth clamping plate are arranged on the second bottom plate. An arc-shaped plate is further connected between the second clamping plate and the third clamping plate,and the convex arc surface of the arc-shaped plate faces the internal corner; the first clamping plate comprises a clamping section and an elastic section, and the lower end of the elastic section isconnected with the first bottom plate; the upper end of the elastic section is connected with the clamping section, the elastic section comprises an upper elastic section and a lower elastic sectionwhich are tangent, and the t