Nutritional rickets, which is caused by deficiency of calcium or vitamin D, is a rare disease in developed countries. However some cases have been reported recently, that developed as a result of a restricted and nutritionally imbalanced diet due to atopic dermatitis and related food allergy. We treated two infant cases of nutritional rickets. The infants had suffered from atopic dermatitis, and were fed "Sun-sik" (a powdery mixture of several grains and fruits) without receiving cow's milk or any milk products in their diet. After an adequate supply of calcium and nutritional management, they were markedly improved.