Handy fastening decoration metal line

The utility model relates to a building decoration material, particularly a decoration metal line which is used for the yin-yang angular line point. As the metal line has inconvenient binding at the yin-yang angular line point, the line is easy to be broken, and the decoration effect is influenced. The utility model bends a thin metal sheet into a desired cross-section shape, simultaneously, two edges are curved inward into a hook shape, and two edges of a corresponding fixing sheet are curved outward into a buckle shape, when the utility model is used for a female angle, the whole body forms 90 DEG; when the utility model is used for a male angle, and whole body forms 270 DEG. When the utility model is installed, a fixing sheet is fastened on a wall first, a decoration line is aligned and pressed only, and the decoration line can slide in and can fasten firmly automatically under the action of the elasticity of the thin metal sheet. The utility model not only has convenience, but also has beautiful appearance.