Understanding on carbohydrate counting is a good way to improve glycemic control in children with type 1 diabetes. A suitable nutrition education tool for children with type 1 diabetes is an alternative tool to help children learn how to counting carbohydrate and gain his/her knowledge. Thai children with type 1 diabetes have problems on managing glycemic levels and they rarely have effectiveness nutrition education tool. The objective of this study was to develop a new nutrition education tool using carbohydrate counting for Thai children with type 1 diabetes. In phase I, we reviewed and collected information, and interviewed children with type 1 diabetes. We wrote contents and created education tool. In phase II, the tool was evaluated by 15 diabetes educators. The results of the study showed the new nutrition education tool using the carbohydrate counting concept was created and it was accepted by diabetes educators. The developed tool was an alternative choice to educate children with type 1 diabetes.