Recently,　point-based　point　cloud　geometry　compression　has　attracted　great　attention　due　to　its　superior　performance　at　low　bit　rates.　However,　lacking　an　efficient　way　to　represent　the　local　geometric　correlation　well,　most　existing　methods　[1,　2,　3]　can　hardly　extract　fine　local　features　accurately.　Thus　it＇s　difficult　for　them　to　obtain　high-quality　reconstruction　of　local　geometry　of　point　clouds.　　©　2023　IEEE.