The　semiconductor　laser　is　widely　used　in　industrial　fields,　and　fiber　coupling　enables　flexible　transmission.　Accordingly,　a　500　W　high-efficiency　fiber-coupled　module　was　designed.　The　technologies　of　beam　shaping,　spatial　multiplexing,　polarization　multiplexing　and　fiber　coupling　were　used　to　couple　ten　bars　into　a　laser　beam.　Ten　bars　were　collimated　by　fast　axis　collimation　lens.　Then　the　beams　were　transformed,　and　collimated　by　slow　axis　collimation　optics.　And　then　the　beam　were　combined.　All　the　beam　were　focused　into　a　multimode　fiber　(400　μm　core　diameter,　NA=0.22)　after　expanding.　Experimental　results　show　that　the　laser　output　from　the　module　can　reach　to　545　W　in　the　current　of　70　A,　corresponding　the　laser　output　from　fiber　could　reach　to　518　W.　High　coupling　efficiency　as　95%　was　obtained,　electro-optic　conversion　efficiency　is　43%,　which　makes　a　foundation　for　kilowatt　fiber-　coupling　semiconductor　laser.　©　2016,　Editorial　Board　of　Journal　of　Infrared　and　Laser　Engineering.　All　right　reserved.