In　order　to　study　the　friction　contact　effect　between　cable　and　membrane　in　cable-membrane　structures,　a　tensioned　cable-membrane　FE　model　which　has　a　stable　cable　(valley　cable)　is　created　with　FEA　software　ANSYS.　The　friction　contact　between　the　valley　cable　and　membrane　surface　is　simulated　by　contact　elements　in　ANSYS,　and　the　effect　of　friction　contact　surface　is　considered　by　the　introduction　of　friction　coefficients.　Three　different　design　valley　cable　forces　(15kN,　20kN　and　25kN)　are　considered　in　form-finding　and　static　analysis,　and　valley　cable　force　losses　are　analyzed.　Results　show　that　valley　cable　force　loss　due　to　friction　contact　should　be　considered　obviously　when　design　valley　cable　force　is　relatively　small.