This paper introduces the construction technology of the 123-meter-diameter double-layer spherical mesh shell of Zhangzhou Houshi Power Plant, which is the largest spherical mesh shell project in China, and the project adopts the hanging construction plan of small assembling unit, and installs the giant spherical mesh shell project with simple construction equipment, and the construction method is technically feasible, easy to install and economically reasonable. This paper also carries out the whole process of tracking analysis of the change of construction internal force on the construction method, and points out some problems that should be paid attention to when determining the construction plan of the mesh shell.