Frequency　selective　surface　(FSS)　radomes　can　effectively　improve　the　stealth　of　flying　weapons.　In　this　letter,　an　integrated　free-standing　thick-screen　FSS　radome　is　designed　using　the　CST　simulation　software.　The　bandpass　characteristic　is　achieved　by　Y-shaped　apertures　with　periodic　distribution　around　the　central　axis　of　the　radome.　Based　on　a　model　of　a　round-head　FSS　radome　with　a　built-in　phased　array　antenna,　we　have　analyzed　the　bandpass　transmittance　and　boresight　error　of　the　radome.　The　copper　shell　was　prepared　by　a　spin　forming　process.　The　FSS　radome　was　fabricated　by　a　laser　robot　system　with　multiple　degrees　of　freedom　and　a　rotary　platform.　The　results　of　the　microwave　anechoic　chamber　test　show　that　the　thick-screen　bandpass　FSS　radome　has　a　good　electromagnetic　performance　with　a　passband　transmittance　of　about　80%　and　a　stopband　transmittance　of　less　than　10%.