To provide a method for suspending and putting up a net to an indoor space and a device for suspending and putting up the net to the indoor space, by which suspension and putting up of the net to the indoor space can be smoothly performed, and by which installation operation of a lifting winch is easily and safely performed.

In a method for suspending, putting up and moving a net to an indoor space, the net is suspended and put up along the space by moving a lifting rope to the upper part of the space using a lifting winch, wherein the lifting rope is connected to the upper end side of the winding net via a pulley installed near the winch. The lifting ropes are each drawn and moved via a pulley provided in the upper part of the space by means of the lifting winches installed in the opposed position in the same way as the moving rope 3. The lifting ropes are then connected to the upper end side of the net 7, wound and moved in synchronization with the winding/moving of the moving rope. Thus, the side of both upper ends and the upper part side of the net are stepwise wound and moved each from two directions, and the net is suspended and put up at the upper part of the space.