Abstract: In order to bring the cartographical communication function of spatial information into full play,the development of computer assisted cartography and requirement of map use in modern science and technique needs a talking map. Based on comparison of several methods to make talking map,a technique of automatic Chinese syllable synthesis by computer is adopted to make talking map. This technique fits the development of digital map and electro-acoustical technique. The construction and characters of talking map system which has been made successfully are described. The functions and the signifi-cances of talking map are approached from theory and practice in this paper.