Objectives The purpose of this study was to find out the relationship between developmental disabilities and oriental medicine using diagnostic procedure based on the symptoms of weak children. Methods The questionnaire administrated to 42 developmental disability children in <TEX>${\bigcirc}{\bigcirc}$</TEX> Hospital's physical therapy room, and 90 general children in day care center. Results 1. The mean value of every organ's weak score was higher in developmental disability children group than that of general children group. 2. Regardless of developmental disabilities, the biggest portion among all children was lung weak children. 3. The percentage of the weak children was 38.1% in developmental disability group and 20% in general children group. 4. Heart, spleen, kidney weak children were significantly more in developmental disability group than in general children group. Conclusions Developmental disability children's weak symptom scores were higher than general children. Also, developmental disability children were more prone to weaker heart, spleen, kidney than general children.