A　video　monitoring　scheme　of　video　was　proposed　under　a　heterogeneous　network,　which　included　a　network　condition　evaluation　method　and　a　video　coding　method　under　network　with　adjustable　parameters.　Firstly,　a　model　of　the　video　monitoring　system　for　the　south-to-north　water　diversion　project　under　heterogeneous　network　was　proposed.　Secondly,　a　network　parameters　evaluating　method　based　on　the　real-time　transport　protocol/real-time　transport　control　protocol　(RTP/RTCP)　was　presented　to　improve　video　coding　efficiency　with　adjustable　parameters.　Finally,　the　performance　of　the　video　monitoring　scheme　was　proved　by　the　system　deployed　in　the　middle　route　of　south-to-north　water　diversion　project.　The　performance　of　the　video　coding　in　current　bandwidth　and　the　video　transmission　efficiency　were　improved　under　heterogeneous　network.　The　video　monitoring　system　met　the　design　requirements　of　four　channel　720P　video　monitoring.　©　2017,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.