A light supplement module, comprising: a circuit substrate; n Light Emitting Diodes disposed in an array on the circuit substrate, n being an integer greater than 1, and there being at least two LEDs having different colors; and a light guiding layer disposed on an upper layer of the n LEDs, wherein the LEDs are color LEDs, or the n LEDs constitute a color LED group, characterized in that: the circuit substrate is electrically connected to a color temperature control chip, and the color temperature control chip is electrically connected to a processor, wherein the processor is configured to perform color temperature analysis on a shot preview image to obtain a value of ambient color temperature, and wherein the color temperature control chip is configured to adjust an overall color temperature of the n LEDs according to the value of ambient color temperature, wherein the processor is further configured to divide the shot preview image to form a plurality of areas, and separately analyze image data in each area to obtain the value of ambient color temperature, wherein the overall color temperature of the n LEDs is adjusted using a negative feedback mechanism according to the value of ambient color temperature and a reference value of color temperature, wherein the processor is further configured to: determine the reference value of color temperature according to a white balance requirement; determine, according to a difference between the value of ambient color temperature and the reference value of color temperature, a target group PWM signal from at least two sets of control parameters according to the negative feedback mechanism, each set of the control parameters comprising n PWM signals used for controlling the overall color temperature of the n LEDs to be a target color temperature, the n PWM signals corresponding to the n LEDs; and wherein the color temperature control chip is further configured to use the n PWM signals in the target group PWM signal to control the n LEDs respectively, wherein the n PWM signals comprise a current signal and/or a voltage signal. a circuit substrate; n Light Emitting Diodes disposed in an array on the circuit substrate, n being an integer greater than 1, and there being at least two LEDs having different colors; and a light guiding layer disposed on an upper layer of the n LEDs, wherein the LEDs are color LEDs, or the n LEDs constitute a color LED group, characterized in that: the circuit substrate is electrically connected to a color temperature control chip, and the color temperature control chip is electrically connected to a processor, wherein the processor is configured to perform color temperature analysis on a shot preview image to obtain a value of ambient color temperature, and wherein the color temperature control chip is configured to adjust an overall color temperature of the n LEDs according to the value of ambient color temperature, wherein the processor is further configured to divide the shot preview image to form a plurality of areas, and separately analyze image data in each area to obtain the value of ambient color temperature, wherein the overall color temperature of the n LEDs is adjusted using a negative feedback mechanism according to the value of ambient color temperature and a reference value of color temperature, wherein the processor is further configured to: determine the reference value of color temperature according to a white balance requirement; determine, according to a difference between the value of ambient color temperature and the reference value of color temperature, a target group PWM signal from at least two sets of control parameters according to the negative feedback mechanism, each set of the control parameters comprising n PWM signals used for controlling the overall color temperature of the n LEDs to be a target color temperature, the n PWM signals corresponding to the n LEDs; and wherein the color temperature control chip is further configured to use the n PWM signals in the target group PWM signal to control the n LEDs respectively, wherein the n PWM signals comprise a current signal and/or a voltage signal. determine the reference value of color temperature according to a white balance requirement; determine, according to a difference between the value of ambient color temperature and the reference value of color temperature, a target group PWM signal from at least two sets of control parameters according to the negative feedback mechanism, each set of the control parameters comprising n PWM signals used for controlling the overall color temperature of the n LEDs to be a target color temperature, the n PWM signals corresponding to the n LEDs; and wherein the color temperature control chip is further configured to use the n PWM signals in the target group PWM signal to control the n LEDs respectively, wherein the n PWM signals comprise a current signal and/or a voltage signal.