The invention belongs to the technical field of communication and particularly relates to a caller prompting system and a caller prompting method. The system comprises a color temperature matching module for determining color temperature current matching parameters, a contact person grouping setting module for grouping contact persons and allocating corresponding color temperatures, a caller module for determining caller color temperature current matching parameters of calling numbers, an ambient light detection module for detecting ambient brightness information, a current configuring module for determining current parameters and a two-color-temperature flashlight module for displaying color temperatures, wherein the color temperature matching module, the contact person grouping setting module, the caller module, the ambient light detection module, the current configuring module and the two-color-temperature flashlight module are sequentially and electrically connected. The system sets different color temperatures for different calling contact persons and adjust brightness of a two-color-temperature flashlight according to ambient brightness, so that a user can recognize information of callers conveniently, the user experience is improved, an additional power consumption caused by work of the calling flashlight is reduced.