Installation method of indoor large-scale suspended ceiling

The invention relates to an installation method of an indoor large-scale suspended ceiling. The installation method is convenient to operate and solves the problem that an existing installation method of the indoor large-scale suspended ceiling is low in construction efficiency. The installation method of the indoor large-scale suspended ceiling includes the following steps: the midpoint of a to-be-installed suspended ceiling is led to the ground according to design positions of the to-be-installed suspended ceiling on a top plate, and a control point is drawn on a corresponding position on the ground according to the design pattern of the to-be-installed suspended ceiling; the control point on the ground is lifted to the corresponding position on the top plate through a wire lead and drawn on the top plate; a suspender is arranged on the control point of the top plate, and elevation of the lower end tip of the suspender is determined according to the ceiling elevation horizontal line and a keel shifting position line; and a main keel, side keels and auxiliary keels are sequentially arranged on the lower end tip of the suspender, and gypsum boards are arranged on the keels according to the design pattern of the to-be-installed suspended ceiling. The installation method of the indoor large-scale suspended ceiling improves construction speed and can be widely used for installation of indoor large-scale suspended ceilings.