Cold-formed section steel composite wallboard with replaceable impact protection device

The invention relates to a cold-formed section steel composite wallboard with a replaceable impact protection device. The cold-formed section steel composite wallboard comprises a cold-formed section steel composite wallboard body, an impact protection bottom plate system and an impact protection panel system. On the outer side of the cold-formed steel composite wallboard, an impact protection device is formed through an impact protection bottom plate system and an impact protection panel system, and the effects of isolating and weakening impact are achieved through a honeycomb filling core and a curled grid; the curled grids consume impact energy by sacrificing fracture and damage of a connecting structure to reduce the influence of the impact effect on the cold-formed steel composite wallboard, and the impact energy is fully converted into elastic potential energy by utilizing the high-elasticity characteristic of a coiled strip material and the annular invisible length of the coiled strip, so that the cold