The invention discloses a method and device for adjusting the color temperature of a screen. The method comprises the steps: detecting an RGB value of a pixel in a user interface of a terminal; acquiring tone information of the user interface according to the RGB value; acquiring a color temperature value corresponding to the tone information of the user interface according to the preset correspondence of the color tone and the color temperature; and adjusting the color temperature of the screen according to the acquired color temperature value. By adopting the method and device, the color temperature of the screen can be dynamically adjusted by the terminal along with the variation of the user interface, so that the color temperature of the screen is matched with the user interface. When the color tone of the user interface is relatively cool, the color temperature of the screen is correspondently lowered, and the color is enabled to be warmer; when the color tone of the user interface is relatively warm, the color temperature of the screen is correspondently increased, so that the color is cooled, the final display effect of the user interface is more natural and more real by virtue of mutual integration and mutual counteraction, the distortion of the picture color is avoided, the display effect of the terminal is improved, and the user experience is enhanced.