In　this　paper,　an　underground　pipeline　location　system　based　on　RFID　technology　is　presented.　The　system　achieves　the　underground　pipeline　location　by　mutual　coupling　between　ground　detector　and　underground　electronic　information　tag.　The　system　contains　a　low-frequency　RFID　modulation　and　demodulation　circuit,　which　can　recognize　the　tag　automatically.　The　agreement　of　tag　and　pipeline　information　is　customized　designed　to　facilitate　the　identification　of　the　tag,　the　location　of　the　pipeline　and　the　management　of　information　storage.　This　system　realizes　the　position　marking　in　the　map　by　GPS　and　Baidu　map　static　API.　The　system　can　also　access　the　remote　MySQL　database　to　store　and　manage　the　tag　information.　The　experiment　results　show　that　the　system　is　convenient　and　practical　for　underground　pipeline　location.　©　2017　IEEE.