Light steel and light concrete structure system is mainly applied to new rural housing, affordable housing in urban areas, post-disaster resettlement housing and multi-story residential buildings. Light steel and light concrete structure takes thin-walled light steel and light concrete as the main material, bases on light steel frame set up at short time, apply integrated wall and floor formwork free of removal, and combines light concrete with the factory production, assembly and construction of light steel, and hence features industrialization, high quality and green low-carbon level.