The　investigation　into　the　nonlinear　vibrations　of　the　three-phase　composite　truncated　conical　shell　structure　is　still　in　its　early　stages,　which　limits　its　practical　implementation.　This　paper　involves　calculating　equivalent　physical　property　parameters　for　the　three-phase　composite　materials　and　establishing　a　nonlinear　dynamic　model　for　the　truncated　conical　shells.　The　study　examines　the　nonlinear　vibration　characteristics　of　the　shells　under　various　conditions,　considering　factors　such　as　temperature,　humidity,　reinforcement　components,　and　external　excitation.　It　is　observed　that　temperature　and　humidity　changes　have　significant　influences　on　the　structure＇s　resonant　responses,　with　varying　effects　for　the　driving　mode　and　accompanying　mode.　The　addition　of　GPLs　or　carbon　fiber　as　reinforcement　components　weakens　the　resonant　response　amplitude　with　an　increase　in　their　content.　External　excitation　is　identified　as　a　noteworthy　energy　input　source　that　significantly　impacts　the　nonlinear　vibration　characteristics　of　the　three-phase　composite　conical　shell　structure,　thereby　amplifying　the　resonant　responses　and　complicating　the　nonlinear　dynamic　behaviors.　The　findings　hold　significant　value　for　guiding　the　design　of　advanced　composite　structures　in　future　engineering.　©　2024