Side wall component of railway vehicle, and railway vehicle

A side wall component of a railway vehicle, comprising:

• a side wall, comprising a side wall body;
• and
• a plurality of side wall upright columns, connected with the side wall body respectively, the plurality of side wall upright columns being provided along a length direction of the side wall body at an interval,
• wherein an auxiliary air duct communicated with a main air duct of the railway vehicle is formed between at least two of the plurality of side wall upright columns and the side wall body in the length direction of the side wall body;
• wherein the side wall component further comprises:
• a vehicle window provided on the side wall body, at least two of the plurality of side wall upright columns being located on a same side of the vehicle window;
• an inner cover plate, wherein the inner cover plate is provided on the at least two of the plurality of side wall upright columns located on the same side of the vehicle window, and the inner cover plate, the at least two of the plurality of side wall upright columns and the side wall body jointly form the auxiliary air duct;
• and
• a reinforcing cross beam provided in the auxiliary air duct, two opposite ends of the auxiliary air duct being correspondingly connected with two side wall upright columns in the plurality of side wall upright columns.