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Bell-state analysis is a considerable challenge and an essential requirementfor reliable implementation of quantum communication proposals. An openquestion is the one for the maximal fraction of successful Bell measurements.It has been pointed out that no scheme using only linear elements can implementa Bell state analyzer. Some effort has paid attention to the completepolarization-entangled Bell-state analysis using linear optics, with the aid ofauxiliary means. Here we present a symmetry-broken scheme with linear opticsonly, without any aid of other auxiliary means, for discriminatingpolarization-entangled Bell states. Although our scheme is unable of realizingcomplete Bell-state measurement for less photon-pairs situation, it candeterministically identify four Bell states with success probabilities beyond99.2% provided that photon-pairs are not less than 8. Our scheme as asignificant breakthrough is simpler and feasible with respect to the currenttechnology for the near-complete Bell-state analysis. Symmetry breaking isindispensable in our scheme as in other physical systems.

Near-complete polarization Bell-state analysis based on symmetry-broken scheme with linear optics