Built-in floor of railway vehicle, floor structure and railway vehicle

The invention discloses a railway vehicle interior floor, a floor structure and a railway vehicle, solves the problems of large weight, low strength and low sound insulation and noise reduction efficiency of the railway vehicle interior floor in the prior art, and has the advantages that the strength of the interior floor is improved, noise can be effectively reduced, generated vibration is subjected to energy recovery, and the service life of the interior floor is prolonged. According to the specific scheme, the built-in floor of the railway vehicle comprises a first plate and a second plate, the second plate is located below the first plate, the first plate is a flat plate, a plurality of bosses are punched on the second plate, part of or all the bosses are fixedly connected with the first plate, and the bosses are fixedly connected with the second plate. A plurality of vibration energy recovery devices are arranged on the outer side of the first plate and/or the second plate and connected with partial elec