The invention provides a video image matting processing method, which comprises the steps of obtaining image matting video, and obtaining at least one foreground pixel transparency estimation model ofpicture pixel colors of a video picture frame of the image matting video from a server; performing video decoding on the image matting video to obtain a video picture frame of the image matting video; and determining foreground pixels, background pixels and the foreground pixel transparency of the video picture frame according to the at least one foreground pixel transparency estimation model ofthe picture pixel colors of the video picture frame of the image matting video so as to perform video image matting processing on the image matting video. The invention further provides a video imagematting processing device. The video image matting processing method and device ensure the accuracy of a terminal for performing video image matting processing, simplify the process of the terminal for performing video image matting processing and improve the efficiency of the terminal for performing video image matting processing.