To provide a back projection type video display device with which an excellent image quality is obtained, whose assemblability is excellent and also which is comparatively inexpensive an is made compact.

A transmission type screen 4 is constituted by applying a reflection preventive coating material incorporating a hard magnetic material to the entire surfaces of a Fresnel lens screen 4a and a lenticular lens screen 4b and sticking them over the entire surfaces by magnetic force. The upper side part 9 of the transmission screen 4 is held and hung between a screen attaching member 5 and a screen holding member 6, and a leaf spring 16 at the left, right and lower sides parts 18 of which the magnetic body tape 15 of the hard magnetic material is stuck is attached together with a screen holding member 6 by an attaching screw 7, and it is brought into close contact and held by the magnetic force of them, and it is supported and held in a plate- thickness direction between the first sliding supporting part 17 of the screen attaching member 5 and the second sliding supporting part 19 of the screen holding member 6 while extending the transmission type screen 4 outward by the spring elastic force of the leaf spring 16.