In　order　to　guide　travelers　for　green　public　transport,　it　is　pressing　to　improve　the　level　of　public　transport　network　services　and　ease　the　increasing　serious　problem　of　traffic　jam.　The　multi-mode　public　transport　includes　the　metro,　the　bus　rapid　transit　and　the　ordinary　bus.　Therefore,　the　individual　travel　chain　data　was　extracted　based　on　IC　card　data.　The　station　coverage　ratio,　the　load　factor　and　the　travel　time　relative　reliability　were　taken　as　indicators　to　calculate　public　transport　relative　reliability　of　different　bus　lines　and　areas.　Then　the　relative　reliability　grades　from　four　large　living　quarters　to　Guomao　in　Jing-Ji　area　were　marked.　Results　show　that　with　the　higher　station　coverage　ratio,　the　more　appropriate　load　factor　and　the　higher　travel　time　relative　reliability　index,　the　relative　reliability　of　public　transport　is　better.　The　relative　reliabilities　of　Tiantongyuan,　Huilongguan,　Tongzhou　and　Yanjiao　are　0.85,　0.70,　0.50　and　0.25　respectively.　It　provides　quantitative　data　support　for　station　layout　of　public　transport.　©　2017,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.