The present invention discloses an apparatus and method for cache memory connection of texture mapping, applied in a computer graphic processing system by storing image texels in cache memories. The apparatus comprises a plurality of cache memories. An array of image texels are stored in a plurality of cache memories to reduce the area occupied by cache memories of the computer graphic processing system. Besides, the apparatus and method of the present invention can be applied in the well-known mapping methods: selecting the nearest point, bilinear filtering and trilinear filtering. A plurality of multiplexers are used to reorganize the plurality of cache memories so as to increase the utilization efficiency of the apparatus of the present invention.