A three-dimensional video image projecting device and projecting method uses video image projectors to project a three-dimensional video image on a cylindrical screen face which can be three-dimensionally viewed through three-dimensional glasses having a first polarizing filter and a second polarizing filter arranged thereon. A plurality of video image projectors are disposed to be opposed to respective regions of the screen face, and the video image projectors produce a continuous, three-dimensional video image in a circumferential direction, by projecting, from the video image projectors, three-dimensional video images, each of which has an angle of 30 degrees or less in a circumferential direction of the screen face, arranged along the circumferential direction of the screen face.