A color temperature adjusting method, a device and a graphical user interface are provided for solving the problem that it is difficult to adjust the color temperature of a display screen to a targetcolor temperature matching with an environmental condition due to a limited range of terminal color temperature adjusting. The display screen of the terminal is provided with a color temperature adjusting area. Each operation point in the color temperature adjusting area is used for displaying a color. Different operation points display different colors. When the color temperature adjusting area is displayed on the display screen, an input operation on the display screen is detected when the display screen is touched. Coordinates of operation points corresponding to the input operation are converted into a first color parameter in response to the detected input operation; acquisition of ambient light is performed; The ambient light is converted into a second color parameter; the first color parameter and the second color parameter are fused to obtain a third color parameter; the third color parameter is converted into a target color parameter; a target color parameter is displayed on adisplay screen of the terminal.