The present application relates to the technical field of aerosol generating devices, and specifically discloses a temperature-adjustable button assembly, a method capable of adjusting the temperature, and an aerosol generating device. The temperature-adjustable button assembly comprises a housing, and a main unit module, a heating assembly and a temperature adjusting button which are mounted on the housing, wherein the main unit module is connected to the heating assembly, such that the heating voltage of the heating assembly is controlled by the main unit module; and the temperature adjusting button is connected to the main unit module. When the aerosol generating device is in a working state, a temperature adjusting instruction is sent to the main unit module by means of the temperature adjusting button, and the main unit module controls the heating temperature of the heating assembly according to the temperature adjusting instruction. According to the adjusting button and the method capable of adjusting the temperature of the heating assembly of the temperature-adjustable button assembly in the working state, a user can adjust the temperature of the heating assembly according to their personal habits during use, which meets the personal taste requirement so as to improve the taste of vaping, and also achieves a good user experience and greatly improved playability, thereby improving the interest of users in same and the uniqueness of products.