This study was designed to observe the nutritional effects of mugwort powder in albino rats. Forty eight young male albino rats, Sprague-Dawley strain, body weight of $80{pm}3g$ were employed in the study. They were fed on the basal diets supplemented with 0,2,4,6, and 10% mugwort powder for 4 weeks respectively. The amounts of food and protein intake in animal groups of 4 to 8% mugwder supplemented were higher than that of control group. The efficiencies of food and protein in animal groups of mugwort powder supplemented were lower than that of nonsupplemented group. The animal group of 4% mugwort powder supplemented group was highest in energy intake among of other groups. The growing rate of animal groups of 2-6% mugwort powder supplemented groups were similar to that of the control group where as 8% or more of mugwort powder supplemented groups were below than the control group. The contents of hemoglobin and hematocrit were no remarkable difference among of the all groups. The levels of blood sugar in the groups of 8% and 10% mugwort powder supplemented were significantly higher than that of the control group, but their A/G ratio of the serum protein were significantly lower than that of the control group instead.