To provide a shape-variable art object, which gives a new pleasure to a person who looks at.

This shape-variable art object 100 is equipped with an upper support 110 and a lower support 120, both of which locating on a vertical line when used in a state hung-down. Between the upper support 110 and the lower support 120, sixteen structurally important rod members 150, which are deformable and, at the same time, curved outside, are arranged at equal space intervals. Along the perimeter of the members 150, a film member 160 is spread. A winch 115 is provided at the upper support 110 so as to take up a linear body 115C, the tip of which is fixed to the lower support 120, or unwind. In accompany with the take-up, the vertically long state of the shape-variable art object 100 is deformed to a horizontally long state.