Base, air spring and vehicle

The embodiment of the utility model provides a base, an air spring and a vehicle. The base comprises a lower end cover and an annular lower swing seat. A first air hole is formed in the lower end cover and used for being connected with the dustproof cover, and the first air hole is used for being communicated with the outside atmosphere; the annular lower swing seat is connected to the lower end cover, the annular lower swing seat is provided with a gas exchange channel, at least part of the gas exchange channel extends in the circumferential direction of the annular lower swing seat, and the gas exchange channel is communicated with the dustproof cover and the first air hole. Therefore, at least part of the gas exchange channel extends in the circumferential direction of the annular lower swing seat, so that the path for foreign matters to enter the dust cover is increased, the difficulty for the foreign matters to enter the dust cover is improved, the damage of the foreign matters to the air spring is reduc