The invention relates to a video image decoding method, which comprises the following step of: performing adaptive regulation to eliminate blocking effects and enhance the brightness and chromaticity information of an image. By the method, the blocking effects are eliminated, high frequency information is enhanced and brightness information distribution are improved according to the characteristics of image sources at a coder and a decoder by utilizing a brightness spatial processing technology to enhance the brightness information of the image on one hand; and on the other hand, the color effects of the image are bettered by utilizing a chromaticity spatial processing technology to finally fulfill the aim of bettering the visual effects of the image.