Full-floating carriage structure and railway vehicle

The invention discloses a full-floating carriage structure and a railway vehicle. The carriage structure comprises a vehicle body sectional material and interior trim panels, the interior trim panelscomprise a vehicle interior floor panel, a side wall trim panel and a vehicle roof trim panel, the vehicle interior floor panel, the side wall trim panel and the vehicle roof trim panel form an interior trim integral structure, an interlayer is formed between the vehicle body sectional material and the interior trim integral structure, and the interlayer is filled with sound absorption and insulation materials. The vehicle interior floor panel and the vehicle body sectional material are in vibration reduction connection through a bottom floating mounting base, the side wall decorative plate isconnected with the vehicle body sectional material through a side floating installation base in a vibration reduction mode, the vehicle roof trim panel is connected with the vehicle body sectional material through a first top