In　this　paper,　in　order　to　solve　the　problem　of　damage　localization　of　anisotropic　carbon　fiber　composite　plates,　an　improved　dense　array　total　focusing　imaging　method　was　proposed.　Firstly,　considering　the　anisotropy　of　the　carbon　fiber　composite　plate,　the　propagation　characteristics　of　the　ultrasonic　guided　waves　in　the　plate　were　analyzed　by　experimental　methods,　and　the　group　velocity　values　along　different　propagation　directions　were　obtained.　Secondly　the　parameters　of　the　dense　sensor　array　were　analyzed　and　optimized,and　the　directional　functions　of　different　array　parameters,　include　the　spacing　of　array　elements　and　the　number　of　array　elements,　were　numerically　analyzed,　and　the　parameters　of　the　array　were　optimized　to　ensure　that　the　main　lobe　of　the　array　was　narrow,　the　side　lobes　were　low,　and　there　was　no　grating　lobe.　Then,　an　improved　structural　defect　location　algorithm　for　dense　sensor　array　plates　considering　the　anisotropy　of　carbon　fiber　composite　plates　was　proposed.　The　total　focusing　algorithm　was　modified　by　using　the　ultrasonic　guided　waves　group　velocity　values　along　different　propagation　directions　in　the　carbon　fiber　composite　plate,　and　the　total　focusing　imaging　of　the　plate　structure　was　carried　out　by　using　the　virtual　focusing　principle.　Finally,　the　positioning　accuracy　of　the　dense　array　total　focus　imaging　method　was　analyzed　by　arranging　the　hole　damage　experiment　of　carbon　fiber　composites.　The　experimental　results　showed　that　the　positioning　accuracy　of　improved　dense　array　total　focusing　imaging　algorithm　method　is　1.　00　mm,　compared　to　using　a　single　group　velocity　value　had　high　accuracy　in　locating　hole　damage　defects.　©　2024　Science　Press.　All　rights　reserved.