The invention particularly provides an installing method of an imitative-ecological umbrella-shaped single-layer latticed shell steel structure. The installing method is characterized in that the umbrella-shaped single-layer latticed shell structure is divided into an umbrella-
diameter steel truss part, a ring beam steel structure part and a vault steel truss part; site splicing is performed, hoisting units of the umbrella-
diameter steel truss, the ring beam steel structure and the vault steel truss are respectively and sequentially spaced in place on the ground according to a splicing sequence; the umbrella-
diameter steel truss is hoisted; latticed temporary supports at the lower portion of the vault steel truss are installed; the ring beam steel structure part is installed; the vault steel truss part is installed; empty space filling
welding is performed; the temporary supports are dismounted. According to the installing method, installing construction of the umbrella-shaped single-layer latticed shell structure is performed by adopting the methods of two times of modular division, pre-
assembly, respective housing and aerial whole splicing. The problems of large aerial bulk
welding amount, poor operating accuracy and high
safety risk of the umbrella-shaped single-layer latticed shell structure are solved. In addition, due to advanced clear labor division, the one-time hoisting operation difficulty is small, and the construction method further has the
advantage of a short construction period.