1. Decorative antirust paint for civil metal objects including balcony, windowsill, handrail, guard bar, etc. 2. Antirust and decoration for steel pipe scaffold, featuring large area application, good decoration, high performance price ratio, fast drying, excellent antirust performance, applicable for construction methods like spraying, brushing, immersing, etc. It is one new generation single-component waterborne metallic paint and is composed of low temperature self-crosslink filming waterborne resin, nano-functional materials, metallic pigment, various special modified agents and auxiliaries, featuring low VOC content, good decoration performance, large area application and high performance price ratio. It is applied to steel pipe scaffold antirust and decoration, ordinary metal steel structure, construction steel structure formwork antirust and decoration.