It can be difficult to highlight the anomalous body by a color matching scheme in the detection for geologic anomalous body if the value range for detecting value of anomalous body is too small. Aimed at this instance, a zoom method to highlight the anomalous body for different detection value intervals was proposed in this paper. First, the value range of interval was zoomed according to the showing-up frequency of different detection value intervals; then liner transform was used to map the detection value into new value range; and finally the new detection value was displayed through the color mixing. The result for the tidal channel of Changxin Formation of Permian in XX area of northeast