The invention relates to an LED intelligent control energy saving system. The system includes a first LED lamp set for providing illumination, a first light sensor and a first spectrum sensor; the LEDlamp set senses natural light, and therefore according to the luminance of the natural light, the luminescent intensity of the LED lamp set is adjusted; the first light sensor detects the luminance near the first LED lamp set and transmits a detection result into a control unit; the first spectrum sensor detects the spectrum near the first LED lamp set and transmits into the control unit, the control unit divides the natural light and artificial light according to the wavelength range of the detected spectrum, and the luminance near the first LED lamp set of the first LED lamp set is calculated to obtain the natural light luminance condition near the first LED lamp set. According to the system, the natural light luminance value is larger, the luminescent intensity of the corresponding LEDlamp set is smaller; the natural light luminance value is smaller, the luminescent intensity of the corresponding LED lamp set is larger.