High-power　diode　laser　system　is　still　belonging　to　the　novel　laser　system　currently.　To　realize　the　output　of　fiber　coupled　high　power　diode　laser　will　greatly　enhance　the　applications　of　diode　laser.　In　this　article,　we　simulated　beam　shaping　and　fiber　coupling　of　diode　laser　with　optical　design　software　ZEMAX　(R),　and　discussed　the　problems　would　be　attended　in　the　process　of　fiber　coupling.　Experiments　on　the　beam　shaping　and　fiber　coupling　were　studied.　Shape　the　diode　laser　beam,　homogenize　fast　and　slow　axis　beam　quality,　and　then　realize　high　power　diode　laser　output　through　polarization　coupling　and　wavelength　coupling.　Finally　through　the　self-developed　fiber　coupling　device,　we　achieved　a　multi-wavelength　high-power　fiber-coupled　diode　laser　output,　the　fiber　core　diameter　600um,　NA　0.22.　Before　fiber　coupling　the　power　of　the　diode　laser　was　773W,　after　fiber　coupling,　the　output　power　was　664W,　and　the　efficiency　of　the　fiber　coupling　is　up　to　85.9%.　The　fluctuation　of　the　power　is　less　than　1%.