In　some　cases,　we　need　to　perform　certain　functions　after　computer　is　started,but　not　logged.This　is　the　role　of　the　service　program.　This　article　discusses　the　establishment　of　an　installation,operation,start　and　stop　function　of　the　windows　service　program　process　and　associated　communication　protocol　implementations.　Before　logged　in　the　case　of　the　operating　system,the　function　of　the　service　program　is　to　achieve　communications　and　data　exchange　with　the　remote　server.　Communication　protocol　consists　request　mainly　based　on　http　protocol　and　text　file　to　receive　and　resolve　in　two　parts　based　on　XML.　In　this　paper,　it　is　beginning　with　architecture　design　presentation,　introduced　the　concept　of　service　program　and　process　design,based　on　http　protocol　session　design　and　XML　parsing,　and　made　some　analysis　of　the　whole　structure.　©　2010　IEEE.