This experiment was carried out to investigate the effects of plane of nutrition by pellet ration on the body composition of broiler chicks. Content of protein and energy in low plane (Low) was 18% and 2,200㎉/㎏, respectively, and that of medium plane (Medium) was 20% and 2,650㎉/㎏, and that of high plane (High) was 22% and 3,100㎉/㎏, respectively. The results obtained were as follows; 1. Dry matter content of chicks increased as the level of dietary protein and dietary energy increased. However, there was no significant difference among three treatments. 2. In the body composition of wet basis, moisture content of chicks increased as the level of dietary protein and dietary energy decreased. On the contrary, fat content increased as the level of dietary energy increased. However, content of calcium and phosphorus in the chick bodyes was not affected by the plane of nutrition. 3. In the body composition of dried basis, body protein content increased as the level of dietary protein decreased. On the contrary, body fat content increased as the level of dietary energy increased. However, there was no difference in the content of calcium and phosphorus by the plane of nutrition. 4. Calorific value of the chick tissue fed pellet ration was not influenced by the level of dietary protein and dietary energy.