This experiment was carried out to investigate the dietary protein and energy requirements of egg type starting chickens of single comb white leghorn. Three dietary energy levels (2900, 2800, 2700㎉, ME/㎏) were employed and each energy level contained three protein levels of 20, 18, 16%. Feeding trial was conducted. The results obtained were as follows: 1. In the energy levels, body weight gain and feed efficiency improved significantly (p $lt; 0.01) higher in the energy level of 2900㎉ than in the energy levels of 2800 and 2700㎉. However, there were no significant differences between 2800㎉ and 2700㎉ levels. feed intake increased progressively with decreasing level of energy. However, there were no significant differences among energy levels. Feed efficiency (Y) of starting chickens was found to be associated in a curvilinear manner with the energy levels (X) of ration. A regression equation: Y = - 17.086 + 0.01489X - 0.000002784X² indicated that the maximum feed efficiency occurred when the energy level was 2900㎉/㎏. 2. In the protein levels, body gain and feed efficiency improved significantly (p $lt; 0.01) as the protein levels increased. Feed intake was significantly (p $lt; 0.01) lower in the 16% protein level than in the 20% and 18% protein levels. In the starting chickens, body weight gain, feed intake and feed efficiency were more affected by dietary protein levels than by dietary energy levels. Body gain (Y₁) and feed efficiency (Y₂) of starting chickens were associated in a curvilinear manner with the protein levels (X) of ration. A regression equation: Y₁= - 413.42 + 85.777X - 2.0613X² Y₂= 2.5251 + 0.08395X - 0.003854X² indicated that the maximum body gain and feed efficiency occurred when the protein level ranged from 18% to 20%. 3. Energy (ME) intake per bird per day ranged from 82 to 87㎉ and was slightly lower in the low energy and low protein levels. Protein intake per bird per day ranged from 4.73g to 6.05g. Protein intake was not affected by energy levels but was slightly lower in the low protein levels. According to the above results, it is concluded that protein levels of 18% to 20% and energy (ME) level of 2900㎉/㎏ would be suitable for optimal growth in starting chickens.