The invention discloses a doom shaped screen projection objective lens comprising a first set of large field negative lenses formed by lenses L1, a second set of large field negative lenses formed by lenses L2, a third set of three cemented lenses formed by lenses L3, L4 and L5 arranged in sequence, a fourth set of lenses formed by lenses L6, L7, L8, and L9 arranged in sequence, an aperture, and a fifth set of lenses formed by lenses L10, L11, L12, L13, and L14 arranged in sequence. The sixth set of components is at the position of a film or a CCD imager. The dome-shaped screen projection objective lens of the invention can be adapted for domed screen display and has a small size and a compact structure. With no aspheric design, the cost is low while the imaging quality is high. For the arrangement of a splitter in the front of the film and the slight optimization of an optical system, an ultra-wide-angle projection lens effect can be achieved.