A　new-type　pre-stressed　spatial　structure,　named　Annular　Crossed　Cable-truss　Structure,　is　proposed　to　overcome　the　shortages　of　the　in-used　Annular　Open-web　Cable-truss　Structure　for　lack　of　disproportionate　collapse　resistance.　The　formulas　of　node　coordinates　of　the　Annular　Crossed　Cable-truss　Structure　in　the　prestressed　state　are　derived　in　Cylindrical　Coordinate　System.　It　is　found　that　the　node　coordinates　are　determined　by　five　geometric　parameters,　the　number　of　nodes　in　outside　ring　I,　the　number　of　ring　segments　spanned　over　by　cable-truss　in　plane　C,　the　distance　between　central　point　O　and　node　in　outside　ring　1　(J1∼j),　the　rise　height　HT　and　the　sag　height　HB.　The　proposal　of　Annular　Crossed　Cable-truss　Structure　provides　a　new　disproportionate　collapse　resistance　design　method　for　pre-stressed　spatial　structures　and　the　derivation　of　the　geometry　parameters　lays　a　foundation　for　further　study　on　performance　of　the　Annular　Crossed　Cable-truss　Structure.　©　2014　by　Ren-Jie　Liu,　Su-Duo　Xue,　Guo-Jun　Sun,　Xiong-Yan　Li.