The invention discloses a wall of a light steel structural house. The wall is divided into an inner wall and an outer wall, wherein the inner wall is composed of
gypsum boards, wall surface OSBs and alight steel
keel, with the light steel
keel as a bearing framework, the two sides of the light steel
keel are each provided with one wall surface OSB, and the
gypsum boards are located on the outermost
layers; the outer wall is composed of a
gypsum board, one wall surface OSB, a light steel keel, the other wall surface OSB, an insulating layer, a ventilation layer and an outer wall hanging platefrom inside to outside. The middle of each light steel keel is filled with a heat preserving and insulating material, a wood keel is arranged in the middle of the ventilation layer,
breathing paper isattached to the surface, close to the insulating layer, of the ventilation layer, and all
layers of the inner wall and the outer wall are connected together by cold-rolled steel nails from the two sides in a fastened mode. The wall is low in weight and good in wind and quake resistance, has good features of heat preserving and insulating, sound insulating,
fire resistance,
moisture prevention,
corrosion prevention and the like, and can be widely applied to office buildings, villas, storehouses, stadiums, entertainment venues and tourism buildings.