This experiments were conducted to investigate the dietary protein and energy requirements of finishing swine (60-100㎏). The experimental groups were divided into 9 groups combining three levels of dietary protein (High, Medium, and Low level) and three levels of digestible energy (High, Medium, and Low level) based on the nutrient requirements of swine in NRC (1973). The results obtained are summarized as follows: 1. Although there were significant differences in daily gain and feed efficiency (P $lt; 0.01), the optimum levels of dietary protein and digestible energy were 12% and 3,300㎉/㎏, respectively. Daily gain was decreased and feed efficiency was depressed as the levels of dietary protein and energy were decreased. Feed intake was also decreased as the level of dietary protein was decreased from 14 to 10% but did not show any consistent tendency by the level of dietary energy. 2. The digestibility for crude protein, crude fat and crude fiber of experimental diets fed during phase 5 tended to decreased as the level of dietary protein was decreased. But the digestibility of crude protein, crude fat and crude fiber were not affected by the levels of dietary energy 3. Dressing percentage, carcass length, lean-meat percentage and back fat thickness were not significantly different among groups, but there was significant difference in loin eye area among groups (P $lt; 0.05). Dressing percentage, carcass length and lean-meat percentage were not affected by the levels of dietary protein and energy, but back fat thickness tended to be decreased as the levels of dietary protein and energy were decreased. Back fat thickness was greatly affected by the level of dietary protein than that of energy. Loin eye area was enlarged as the level of dietary protein was increased and as the level of dietary energy was decreased. 4. The linear regression equations were derived from the data of feeding trials. The proper linear regression equations obtained from the present studies to calculate the protein and energy requirements are as follows: Y = 528.10 + 0.68X (Y = daily gain, X = protein intake) Y = 4.02 + 0.073X (Y =daily gain, AX = DE intake) The calculated daily protein and DE intake obtained from the equation were as follows: CP intake; 400g, DE intake; 10,904㎉, daily gain; 800g