The invention discloses a monolayer integrated hexagonal machine room. The machine room is composed of bearing stand columns, wall structure and integrated decoration. The main structure of the machine room refers to truss-type bearing steel structure. Flanges at the top ends of the three bearing columns among the standing columns in hexagon arrangement are connected with the upper part of a tower by high-strength bolts. Flanges at the end of the columns are connected with the anchor bolts. The machine room is a monolayer regular hexagon. Cross beams, brace rods and wall bodies of the machine room are fixed to the stand columns. The interior wall panels refer to novel environmental-friendly composite panels. The floor adopts steel composite anti-static load bearing floor. The monolayer integrated hexagon machine room has the advantages of saving land source, cost, and construction time, having reasonable design, strong wing resistance and impact resistance, capabilities of fire prevention, thievery prevention, dust prevention and water resistance, being convenient to install and having very high social and economic benefits.