The invention discloses an intelligent dimming controller in an LED shadowless lamp lighting system. A blurred visual image processing technology is adopted to conduct feature analysis and processing on images in a surgical view field, brightness information and chrominance information of a lighting environment are extracted, and current control parameters of LED light sources are calculated through an intelligent processing algorithm. Specifically, the images in the surgical view field are converted into digital image signals firstly, the signals are read into the system through a video image collecting module, then the signals are analyzed through an image analysis and processing module, illuminance distribution information and chrominance distribution information are extracted, corresponding illuminance feature vectors and corresponding chrominance feature vectors are extracted through an illuminance and chrominance feature extraction module, a shadow area generated by a shielding object is split through a blurred image dividing module, the driving current value of the corresponding LED light source is worked out through a blurred neural network, the driving current value is sent to an LED controller to adjust the brightness of a corresponding LED. Thus, the purposes of shadow eliminating, illuminance evening and constant-light control are achieved, automatic dimming control is realized, no manual intervention is needed, and shadows are completely eliminated.