The　deep　shale　gas　resources　in　the　Luzhou　area　of　the　southern　Sichuan　Basin　are　abundant　and　have　been　identified　as　a　key　replacement　field　for　natural　gas　development　following　the　medium-to-shallow　shale　gas　fields　in　Changning　and　Weiyuan.　However,　the　frequent　occurrence　of　＂pre-deformation　without　fracturing＂　in　horizontal　wells　has　significantly　restricted　large-scale　production.　In　this　study,　the　Lu203　and　Yang101　well　areas　were　analyzed　to　investigate　the　characteristics　of　casing　deformation　and　the　correlation　with　faults　and　natural　fractures　(fracture　systems).　A　numerical　model　of　multi-stage　fracturing　for　platform　wells　was　established　based　on　microseismic　event　data,　and　the　effects　of　fracturing　on　the　stress　and　casing　stress　of　adjacent　wells　were　simulated　and　analyzed.　The　results　indicate　that　the　development　of　fracture　systems　is　the　primary　cause　of　the　＂pre-deformation　without　fracturing＂　phenomenon.　The　propagation　of　fracturing　fluid　through　fractures　significantly　increases　the　stress　and　loading　around　adjacent　wells,　causing　casing　stress　to　exceed　its　yield　strength.　To　mitigate　this　issue,　a　method　involving　the　injection　of　approximately　10　MPa　of　internal　casing　pressure　into　unfractured　wells　was　proposed,　effectively　reducing　the　risk　of　casing　deformation　and　failure.　This　provides　technical　support　for　the　efficient　development　of　deep　shale　gas.