In　the　general　architecture　of　software　defined　networks,　controller　often　uses　traditional　OSPF　(Open　Shortest　Path　First)　routing　algorithm　selecting　the　shortest　path　as　the　final　single　path　when　calculate　networks＇　topology.　This　may　cause　the　busy　nodes　will　still　receive　large　amount　of　transmission　data　requests　when　they　had　already　blocked　by　current　works.　Especially　in　the　environment　of　the　mobile　networks,　the　differences　in　data　requests　can　suddenly　cause　some　node　data　to　be　congested,　while　the　other　part　is　idle,　both　waste　the　resources　of　network　and　influence　the　quality　of　network　service.　This　paper　designs　an　all　pairs　shortest　paths　algorithm　to　calculate　the　topology　information　in　the　nodes　of　software　defined　networks　regularly　and　put　forward　a　congestion　control　strategy　based　on　OpenFlow　protocol　to　solve　the　problem　of　loading　imbalanced　of　the　data　center　networking　of　the　software　defined　mobile　networks.　We　elaborate　on　its　overall　framework　and　algorithm　implementation　process,　and　is　proved　by　experimental　simulation　that　the　algorithm　can　relieve　network　congestion,　improve　network　utilization　and　enhance　the　effectiveness　of　network　stability.