Car-plate locating is the first step of the recognition of car-plate. The accuracy of locating plays an important role in the next steps. An approach of car-plate locating based on color segmentation is presented. Firstly, the input picture is roughly segmented based on the color information, and some regions with the color of car-plate are obtained. Then the false regions in the result image is eliminated. At last, projection method is used to get the accurate position of the plate. The experimental result shows that the proposed method is quite effective.