The invention provides a large-scale glass steel embossment background wall installing structure. A plurality of parallel arranged first installing grooved are fixedly formed in a wall face, and a first framework is installed in each first installing groove; a plurality of parallel arranged second frameworks are formed in each first framework, and each second framework is perpendicular to the corresponding first framework; a sliding connecting part is arranged on the surface of each second framework, and a plurality of connecting pieces are slidably connected with each sliding connecting part; each connecting piece comprises two oppositely arranged connecting units, second installing grooves and third installing grooves are formed in the two connecting units correspondingly; a first connecting rod is internally hinged to each installing groove, and a second connecting rod is arranged in each third installing groove; one end of each second installing rod is internally hinged to the corresponding third installing groove, and the other opposite end of each second connecting rod is hinged to the corresponding first connecting rod; and glass plates are connected with the connecting pieces. According to the large-scale glass steel embossment background wall installing structure, the technical problems of staggered joints, unsmooth grains and bad firmness of installing and splicing for glass steel embossment wall plates in the prior art can be solved.