The present paper reviews the vibro-acoustic modelling of extruded aluminium train lloor structures including the state-of-the-art of its industrial applications,as well as the most recent developments on mid-frequency modelling techniques in general.With the common purpose to predict mid-frequency vibro-acoustic responses of stiffened panel structures to an acceptable accuracy at a reasonable computational cost,relevant techniques are mainly based on one of the following three types of mid-frequency vibroacoustic modelling principles:(1) enhanced deterministic methods,(2) enhanced statistical methods,and(3) hybrid deterministic/statistical methods.It is shown that,although recent developments have led to a significant step forward in industrial applicability,mature and adequate prediction techniques,however,are still very much required for solving sound transmission through,and radiation from,extruded aluminium panels used on high-speed trains.Due to their great potentials for predicting mid-frequency vibro-acoustics of stiffened panel structures,two of recently developed mid-frequency modelling approaches,i.e.the so-called hybrid finite element-statistical energy analysis(FE-SEA) and hybrid wave-based methodstatistical energy analysis(WBM-SEA),are then recapitulated. The present paper reviews of vibro-acoustic modeling of the extruded aluminum train lloor structures including the state-of-the-art of its industrial applications, as well as the most recent developments on mid-frequency modeling techniques in general .With the common purpose to predict mid-frequency vibro-acoustic responses of stiffened panel structures to an acceptable accuracy of a reasonable computational cost, relevant techniques are mainly based on one of the following three types of mid-frequency vibroacoustic modeling principles: (1) enhanced deterministic methods, ( 2) enhanced statistical methods, and (3) hybrid deterministic / statistical methods. It is shown that, recent recent developments have led to a significant step forward in industrial applicability, mature and adequate prediction techniques, however, are still very much required for solving sound transmission through, and radiation from, extruded aluminum panels used on high-speed trains. Due to their great potentials for predict ing mid-frequency vibro-acoustics of stiffened panel structures, two of recently developed mid-frequency modeling approaches, iethe so-called hybrid finite element-statistical energy analysis (FE-SEA) and hybrid wave-based method statistical energy analysis (WBM- SEA), are then recapitulated.