The utility model discloses a cross minute storehouse structure of super flat one shot forming load -bearing and insulating floor ground of super large, including two branch storehouse seam board groups, two cross cross arrangement of branch storehouse seam board group, be equipped with four horizontal corner brace poles along the circumference equipartition between two branch storehouse seam board groups, every divides storehouse seam board group including four blocks of branch storehouse seam boards, four two two sides vertical settings face to face of branch storehouse seam board form a crack, two steel of face -to -face vertical setting divide storehouse seam board to adopt plastic bolt to connect, load flexible dunnage in the lower part of crack, be equipped with the joint filling glue embedment body on the upper portion of crack, the equal rigid coupling in back upper portion at every block of steel branch storehouse seam board has rather than the horizontal dowel steel of vertically, it passes the power board rather than the vertically level to wear to be equipped with at the middle part of two blocks of steel branch storehouse seam boards, the one end that the level passedthe power board is equipped with plastics sheath cover, the back at every block of steel branch storehouse seam board all is equipped with the fixed bolster. The utility model discloses when guaranteeing the shaping quality, can accelerate the construction progress, practice thrift construction cost.