In　this　paper,an　online　cable　fault　location　method　based　on　Short-Time　Matrix　Pencil　Method　is　proposed.　In　the　110kV　cross-bonded　cable　hybrid　line　with　GIS,　the　method　does　not　need　to　disassemble　the　GIS　of　the　cable　terminal,　and　extracts　the　transient　current　traveling　wave　from　the　sheath　ground　wire　of　the　cable　ends.　The　Short-Time　Matrix　Pencil　Method　is　used　to　extract　the　signal　abrupt　point　in　the　current　traveling　wave　caused　by　the　short-circuit　fault　occurs　in　the　line,　and　achieves　the　purpose　of　fault　location.　The　cable　system　model　is　established　in　PSCAD　to　simulate　different　fault　types　and　distances.　Compared　with　the　commonly　used　wavelet　analysis　method,　the　results　show　that　the　method　has　higher　feasibility　and　accuracy.　©　2019　IEEE.