The　well　integrity　issues　have　a　direct　impact　on　improving　single　well　production　of　shale　gas　horizontal　wells.　Reviewing　the　domestic　and　foreign　literature　researches,　the　development　status　of　major　shale　gas　blocks　at　home　and　abroad　were　introduced.　Well　integrity　failure　characteristics　of　major　shale　gas　blocks　at　home　and　abroad　were　counted　and　analyzed　in　detail.　Finally,　considering　the　shale　gas　development　in　China　as　an　example,　the　structural　integrity　(casing　deformation)　and　seal　integrity　(Sustained　Casing/Annulus　pressure,　SCP/SAP)　were　analyzed　by　clarifying　the　failure　mechanism　from　the　view　of　well　integrity　issues　affecting　shale　gas　production.　It　is　considered　that　shale　gas　well　integrity　issues　in　China　are　a　new　problem　and　the　failure　mechanism　of　shale　gas　well　integrity　needs　to　be　further　clarified,　and　a　complete　set　of　failure　prediction　and　control　methods　has　not　yet　been　formed.　Therefore,　based　on　the　concept　of　shale　gas　geology-engineering　integration,　considering　the　actual　conditions　of　shale　gas　development　blocks,　it　is　proposed　to　scientifically　and　reasonably　study　the　shale　gas　well　integrity　failure　mechanisms　and　their　control　methods,　which　is　the　reference　and　guidance　to　improve　shale　gas　development.　©　2019　Trans　Tech　Publications,　Switzerland.