The application discloses a solid stores up hot junction to be constructed, it includes heat preservation room and a plurality of solid heat -retaining module, wherein: the heat preservation room hasheat preservation and holds the chamber, and is a plurality of solid heat -retaining module all sets up during the chamber is held in heat preservation, with the inner wall that the chamber is held inheat preservation is adjacent solid heat -retaining module with heat preservation is held and is left first thermal energy between the inner wall in chamber and dodge the clearance, adjacent two leave the second thermal energy between the solid heat -retaining module and dodge the clearance. Above -mentioned scheme can be solved present light and heat station and great and need consume the greatinsulation material's of measuring problem for the work load of the solitary heat preservation of every solid heat -retaining module setting cover existence.