A control system for a flash assembly of a mobile terminal, comprising: a flash assembly disposed on the mobile terminal, the flash assembly being a display assembly disposed at a front end of a camera assembly of the mobile terminal; a scene predictor configured to acquire an ambient light color temperature and an ambient light brightness of a current scene through the camera assembly, calculate a focus point, a target value for color temperature adjustment and a target value for brightness adjustment using 3A algorithm, and transmit the focus point, the target value for color temperature adjustment and the target value for brightness adjustment to a controller; the controller configured to calculate correspondingly a shutter speed, a sensitivity of a sensor of the camera assembly, and a current ratio outputted by the flash assembly according to the target value for color temperature adjustment and the target value for brightness adjustment; the flash assembly outputting a corresponding display brightness and a corresponding display color temperature according to the current ratio; and a manual regulator configured to adjust parameters of brightness, color temperature, and flash frequency of the flash assembly manually and transmit the parameters to the controller, the controller outputting a corresponding current ratio according to the parameters; it is characterized in that, the manual regulator is further configured to adjust the color of the flash assembly; the 3A algorithm comprises an automatic focus algorithm, an automatic exposure algorithm and an automatic white balance algorithm, and the automatic white balance algorithm comprises: obtaining a pre-flash image by pre-flashing the flash assembly after obtaining an original image of the current scene through the camera assembly; analyzing the original image, and performing statistical operations on R/G and B/G information in the original image to obtain color temperature information of the original image; analyzing the pre-flash image, and performing statistical operations on R/G and B/G information in the pre-flash image to obtain color temperature information of the pre-flash image; and adding the color temperature information of the original image to the color temperature information of the pre-flash image to finally obtain the target value for color temperature adjustment. a flash assembly disposed on the mobile terminal, the flash assembly being a display assembly disposed at a front end of a camera assembly of the mobile terminal; a scene predictor configured to acquire an ambient light color temperature and an ambient light brightness of a current scene through the camera assembly, calculate a focus point, a target value for color temperature adjustment and a target value for brightness adjustment using 3A algorithm, and transmit the focus point, the target value for color temperature adjustment and the target value for brightness adjustment to a controller; the controller configured to calculate correspondingly a shutter speed, a sensitivity of a sensor of the camera assembly, and a current ratio outputted by the flash assembly according to the target value for color temperature adjustment and the target value for brightness adjustment; the flash assembly outputting a corresponding display brightness and a corresponding display color temperature according to the current ratio; and a manual regulator configured to adjust parameters of brightness, color temperature, and flash frequency of the flash assembly manually and transmit the parameters to the controller, the controller outputting a corresponding current ratio according to the parameters; it is characterized in that, the manual regulator is further configured to adjust the color of the flash assembly; the 3A algorithm comprises an automatic focus algorithm, an automatic exposure algorithm and an automatic white balance algorithm, and the automatic white balance algorithm comprises: obtaining a pre-flash image by pre-flashing the flash assembly after obtaining an original image of the current scene through the camera assembly; analyzing the original image, and performing statistical operations on R/G and B/G information in the original image to obtain color temperature information of the original image; analyzing the pre-flash image, and performing statistical operations on R/G and B/G information in the pre-flash image to obtain color temperature information of the pre-flash image; and adding the color temperature information of the original image to the color temperature information of the pre-flash image to finally obtain the target value for color temperature adjustment. obtaining a pre-flash image by pre-flashing the flash assembly after obtaining an original image of the current scene through the camera assembly; analyzing the original image, and performing statistical operations on R/G and B/G information in the original image to obtain color temperature information of the original image; analyzing the pre-flash image, and performing statistical operations on R/G and B/G information in the pre-flash image to obtain color temperature information of the pre-flash image; and adding the color temperature information of the original image to the color temperature information of the pre-flash image to finally obtain the target value for color temperature adjustment.