This paper deals with the problem of the cartography of the mortality map. By using cluster analysis, we classify the 13 areas in Hsinchu County into 3 clusters by their main causes of death. The 7 traditional Hakka countryside areas form the first cluster. Their main mortality causes are cerebrovascular diseases and heart diseases which mainly occurred in the elders. The two aboriginal hsiangs, Chienshih and Wufeng, form the second cluster. The main mortality causes are accidents and cerebrovascular diseases. The third cluster consists of the urbanized or industrialized areas including Chupei Shih, Chutung Chen, Hsinfeng Hsiang and Hukou Hsiang. By using this mortality map, the endemic prophylactic plans can be executed and assessed more efficiently by the local health bureau.