Light guide thick-wall part, vehicle lamp and vehicle

The utility model relates to the technical field of vehicle lamps and illumination, and provides a light guide thick-wall part, a vehicle lamp and a vehicle. The light guide thick-wall piece comprises a light guide thick-wall piece body, a light uniformizing wall and a light emitting wall are formed on the two opposite sides of the light guide thick-wall piece body respectively, a first wall is formed between the light uniformizing wall and the light emitting wall, the included angle between the first wall and the light emitting wall is an acute angle, and a reflecting face is arranged on the outer side of the first wall. The reflecting surface is arranged on the outer side of the first wall, so that uniform light emitted by the uniform light wall enters the first wall, is reflected by the reflecting surface, enters the light guide thick-wall piece body, and finally is emitted from one end, close to the first wall, of the light emitting wall. In other words, the emergent light emitted from the end, close to t