Aiming　at　the　application　of　the　experimental　system　of　earth　temperature　monitoring,　this　study　designed　a　ZigBee　technology-based　wireless　sensor　network　(WSN)　and　designed　the　network　topology　according　to　actual　demand.　The　system　adopted　a　tree　network　model　and　used　the　CC2430　as　the　core　chip　of　the　wireless　communication　network　of　temperature　measuring　system.　Moreover,　DS18B20　temperature　sensor　was　used　to　collect　temperature　data.　According　to　the　preset　routing　protocol,　the　temperature　data　obtained　were　uploaded　to　the　coordinator　node　via　the　router　node　by　multiple　hops.　The　temperature　data　collected　by　coordinator　node　were　transformed　to　the　host　after　being　processed.　Applying　the　Cluster-Tree　and　AODVjr　optimized　routing　algorithm,　this　system　showed　the　advantages　of　low　complexity,　easy　deployment,　high　efficiency,　good　real-time　performance,　low　power　consumption,　and　convenient　for　long-time　work.　In　addition,　it　provided　powerful　support　for　the　real-time　monitoring　of　farmland　experiment　system.