This experiment was carried out to investigate the dietary protein and energy requirements of egg type White Leghorn pullets. Three metabolizable energy levels (2900, 2800, 2700㎉/㎏) were employed and each energy level contained three protein levels of 14, 13, 12%. Digestion trial and slaughter analysis were conducted. The results obtained were as follows. 1. In the energy levels, utilizability of dry matter of pullets was significantly higher in the 2800㎉ energy level than in the 2900㎉ and 2700㎉ energy levels but there were no differences between 2900㎉ and 2700㎉ energy levels. Utilizability of crude protein was significantly higher in the 2800㎉ energy level than in the 2900㎉ energy level but there were no differences between 2800㎉ and 2700㎉ energy levels. Utilizability of crude protein (X) of pullets was associated in a curvilinear manner with energy levels(X) of ration. A regression equation Y=-3899.2 + 2.8418X - 0.0005118X² indicated that maximum utilizability of crude protein occurred when the energy level was 2800㎉/㎏. Utilizability of carbohydrate was significantly higher in the 2800㎉ energy level than in the 2700㎉ energy level but no differences were found out between 2800㎉ and 2900㎉ energy levels. Utilizability of crude fat showed no differences among energy levels. Utilizability of metabolizable energy was significantly higher in the 2800㎉ energy level and that of ME(Y) was associated in a curvilinear manner with energy levels(X) of ration. A regression equation Y = -1615.5 + 1.2017X - 0.0002132X² indicated that maximum utilizability of ME occurred when the energy level was 2800㎉/㎏. 2. In the protein levels, utilizability of dry matter, crude protein, carbohydrate and energy showed no significant differences among protein levels. However, utilizability of crude fat was highest in the 13% crude protein level but there were no differences between 14% and 12% protein levels. 3. Body composition of pullets showed a tendency that body protein content was higher as the dietary energy levels increased and body fat content was higher as the dietary energy and protein levels decreased. However, ash content was not affected by the dietary energy and protein levels. According to the above results, it is concluded that 12% protein level and 2800㎉ metabolizable energy level would be suitable for optimal performance in egg type pullets.