Some high-end cars in the world, such as BMW 740, Mercedes-Benz S350 and above have been equipped with seat ventilation system, but it is not really a car seat air-conditioning system, because the seat itself does not have immediate heating and cooling functions. It is limited to ventilation, and all need to wait for the original car air conditioning system to run for a period of time, and the internal environment temperature of the car can reach the set comfort temperature. These top international luxury car manufacturers have invested a lot of R&D funds to develop the true car seat air conditioning system. Therefore, the car seat air conditioning system will become the new favorite of the car top in the future, but due to the high technical threshold, there is no mature product push. To the market, even if it enters the market in the future, the price will inevitably remain high due to the high R&D expenses in the early stage and the pursuit of high profits.