The utility model discloses an extra -large -size concrete contains formula low temperature storage tank entirely, including outer jar of low -temperature steel inner tank, concrete and the overhead cushion cap of concrete, tank deck and heat insulation layer, wherein the inner tank is equipped with inner tank wall reinforcing ring, and the tank deck includes the outer tank deck of concrete, resistance to compression ring, arch rack steel construction and cover dermal plate, furred ceiling board and tank deck attachment of nozzle, and the heat insulation layer includes tank bottoms heat insulation layer, inner tank wallboard and outer jar wall inside lining inter -plate annular space heat insulation layer and hot corner protective layer, furred ceiling board outside heat insulation layer. The utility model provides a to be less than 50, 000 cubic metres of volume construction cost of prestressed reinforced concrete storage tank unit high, technical problem that construction procedure is complicated relatively. The low temperature storage tank have the security good, store bulkyly, liquefaction hydrocarbon and LNG's storage condition, reduction carrying cost can effectively be improved to the unit volume is with low costs, the volume area of unit is little advantage. The low temperature tank volume is 50, 000-26.5 ten thousand cubic metres, and the storage temperature scope that relates to is - 198 to 45 DEG C.