In this study intended to salt and pepper noise in gray level digital image is reduced with adaptive fuzzy filter(ABF) method. Filtering process is realized in two stages. In the first stage, amount of salt and pepper noise has been detected in the image. In the second stage, noise is reduced by a filter that of coefficients are determined according to amount of detected noise from the image. ABF method has supported with standart median filter in order to increase recovery and this method has named median supported adaptive fuzzy filter(MDABF). The method has tested with different images and effective results were obtained from the images contain high level noise too.