The invention discloses an air comfort level adjusting method, a system, a server and a user terminal. The air comfort level adjusting method comprises the steps of acquiring matching information of auser, wherein the matching information comprises retrieved user registration information, current time information and weather data information, and the registration information comprises personal information, family information and house information of the user; matching the matching information and label information of air comfort level parameters in an air comfort level database, and acquiringan air comfort level parameter suitable for the user, wherein the label information comprises user labels, time labels and weather data labels; and adjusting an air adjusting device of the user according to the air comfort level parameter. According to the air comfort level adjusting method provided by the invention, through a big data method, when the indoor air of the user is adjusted, the practical situation of the user, the current time and the current weather situation can be combined, so that air produced by the air adjusting device is more suitable for the user, and the air adjusting device can be intelligently controlled.