The　transmission　capacity　of　CDMA　Wireless　Ad　Hoc　Networks　is　constrained　by　the　mutual　interference　of　concurrent　transmissions　among　nodes.　This　paper　studies　the　transmission　capacity　and　throughput　of　CDMA　Wireless　Ad　Hoc　Networks　from　the　view　of　the　information　flux　among　nodes,　and　makes　a　research　on　the　impact　of　interference　among　nodes　on　transmission　capacity　of　networks.　The　paper　concludes　and　proves　a　sufficient　condition　to　support　the　successful　transmissions　among　nodes,　and　at　last,　some　simulations　is　given　and　the　validity　of　the　results　of　paper　is　testified　and　a　fit　equation　for　information　flux　among　nodes　also　is　proposed.