PURPOSE: To double the joy of seeing a picture book by forming a doll, animal toys and the like showing a leading character of the story of the picture book in an expanded shape having elastic restoring ability, fixing the same to the back cover, and projecting the same from a window hole of the front cover to the outside to bring interest in appearance, and enabling deformation by pressing the doll or the like to be recessed and producing a sound at the time of deformation.

CONSTITUTION: Window holes 5 of the same shape are continuously bored in the same position of the front cover 2 and the paper sheets 4 of the respective pages except the back cover 3, a figure body 6 imitating a leading character of the story of a picture book is fixed to the back cover 3 and positioned in the window hole 5, 7 the figure body 6 has elastic restoring ability, the interior of the body is hollow, and a sound generating means operated corresponding to the elastic deformation is disposed ' inside the figure body.