Accessibility　could　reflect　people＇s　travel　convenience,　cities＇　livability　and　sustainability,　and　reduce　the　negative　impacts　on　the　environment　and　safety.　It　is　therefore　a　key　concept　in　city　sustainable　development　policies　across　the　world.　Based　on　the　multi-source　data,　this　paper　tries　to　have　an　empirical　analysis　on　the　urban　accessibility　of　Qingdao　city　from　the　angles　of　spatial　linkage　strength,　job-hosting　ratio　and　distributions　of　large-scale　hospitals　and　schools.　The　multisource　data　includes　navigation　data,　location　based　service　(LBS)　data,　Point　of　Interest　(POI)　data　and　the　census　data.　The　inter-city　linkage　strength　and　internal-external　linkage　strength　are　used　to　evaluate　the　spatial　linkages　of　the　urban　agglomeration.　Results　show　that　the　spatial　connectivity　and　public　facilities　have　a　very　strong　positive　correlation　with　the　inter-city　accessibility.　Meanwhile,　providing　transport　infrastructure　and　services　could　greatly　strengthen　the　accessibility　between　two　areas.　Job-housing　ratio　is　used　to　analyze　the　distribution　of　residents　and　jobs.　Results　show　that　the　job-housing　ratio　declines　gradually　from　the　central　urban　areas　to　the　surrounding　areas.　Distributions　of　large-scale　hospitals　and　schools　are　used　to　estimate　the　service　capacity　of　public　facilities.　Results　show　that　public　service　facilities　are　mainly　concentrated　in　the　developed　areas.　On　the　contrary,　the　other　areas　developed　slowly　due　to　lack　of　supporting　service　facilities.