Copris tripartitus Waterhouse is a coprophagus insect which enhances the soil fertility as conveying dung into the soil. We compared preimaginal development, mortality, and size of C. tripartitus at various temperature condition (15, 17.5, 20, 25, 27.5, 30). Total preimaginal periods ranged from 118.0d at 17.5℃ to 49.3d at 27.5℃. Development threshold temperature (DT) and total effective temperature for the development of egg, larva, pupa and for complete development (egg to emergence) were 12.1, 11.2, 12.1 and 9.2℃ and 82.7, 462.0, 225.7 and 947.2 degree days, respectively. The mortality of egg and larva was the lowest at 25℃. The optimum temperature for hatchability and on the development of C. tripartitus was estimated to the 25℃.