To　realize　the　three-dimensional　trajectory　tracking　control　for　an　autonomous　underwater　vehicle(AUV)　under　the　conditions　of　external　interference,　this　paper　proposed　an　approach　based　on　dynamic　surface　control(DSC)　and　L　2disturbance　attenuation.　The　control　design　was　made　for　a　class　of　nonlinear　systems　in　strict-feedback　form　by　using　the　DSC　method　based　on　Lyapunov　stability　theory.　The　dynamic　surface　control　method　was　used　so　as　to　avoid　the　problem　of　＂explosion　of　complexity＂effectively　by　using　the　traditional　backstepping　method,　and　the　external　disturbance　was　suppressed　by　using　the　L　2　disturbance　attenuation　controller.　A　numerical　simulation　was　carried　out　for　an　AUV　by　utilizing　Matlab,　and　results　show　that　the　designed　controller　suppresses　the　influence　of　external　disturbance　well,　which　can　achieve　three-dimensional　trajectory　tracking　control　performance　effectively.