PURPOSE: To provide a deformed bag apparatus which enables the deforming thereof easily to a desired form and the returning thereof easily to the initial condition.

CONSTITUTION: A grip part 5 as bag-shaped body is formed using an air impermeable material. The inside of the grip part 5 is filled with particulate bodies 6. There is a room provided between the particulate bodies to such an extent as to allow the deformation of the grip part 5. A plurality of air holes 7a are formed on the surface of a pipe body 7 inserted into the grip part 5. The mouth of the grip part 5 is closed. The end part of the pipe body 7 outside the grip part 5 is connected to a pump. The grip part 5 is deformed to a desired form and a switch of the pump is turned ON to operate so that air in the grip part 5 is bled to maintain the desired form thereof.