In　a　cellular　network,　how　to　preserve　users＇　quality　of　service　(QoS)　demands　is　an　important　issue.　To　provide　better　data　services,　researchers　and　industry　have　discussed　the　deployment　of　small　cells　in　cellular　networks　to　support　dual　connectivity　enhancement　for　user　equipments　(UEs).　By　such　an　enhancement,　a　base　station　can　dispatch　downlink　data　to　its　surrounding　small　cells,　and　UEs　that　are　located　in　the　overlapping　areas　of　the　base　station　and　small　cells　can　receive　downlink　data　from　both　sides　simultaneously.　We　observe　that　previous　works　do　not　jointly　consider　QoS　requirements　and　system　capabilities　when　making　scheduling　decisions.　Therefore,　in　this　work,　we　design　a　QoS　traffic　scheduling　scheme　for　dual　connectivity　networks.　The　designed　scheme　contains　two　parts.　First,　we　propose　a　data　dispatching　decision　scheme　for　the　base　station　to　decide　how　much　data　should　be　dispatched　to　small　cells.　When　making　a　dispatching　decision,　the　proposed　scheme　aims　to　maximize　throughput　and　ensure　that　data　flows　can　be　processed　in　time.　Second,　we　design　a　radio　resource　scheduling　method,　which　aims　to　reduce　dropping　ratios　of　high-priority　QoS　data　flows,　while　avoiding　wasting　radio　resources.　In　this　work,　we　verify　our　design　using　simulation　programs.　The　experimental　results　show　that　compared　to　the　existing　methods,　the　proposed　scheme　can　effectively　increase　system　throughput　and　decrease　packet　drop　ratios.