Abstract: This paper presents the morphological feature of the ore bodies in Shaxi porphyry copper deposit by means of trend analysis and with the help of computer program. Considering the geological structures and the thermal fluid alteration which control the ore bodies, the authors dicuss the relationship between the distribution of ore bodies and the ore-controlling structures and thermal fluid alteration in the ore deposit. The results show that there exists good correlation between the ore bodies derived from the trend surface analysis and those from exploration.