Studies on intelligent transport systems, which target adults as users, have been actively developed: One of the examples is a navigation system using electronic maps. However, for children of a third and under grade elementary students, it is difficult to read a map and use such a system. This paper proposes a route indication system using the smartphone vibration function for children who are not used to reading maps. When a user turns a device equipped with this system, the direction to a previously set target point is indicated by the smartphone vibrations. In the course of development of the proposed system, a preliminary experiment was conducted to evaluate the necessary optimal angle degree to a direction to a target point. The result showed that a variation of 20 degrees towards the desired destination was optimal to navigate to any target point. Using this parameter in our system, an experiment was conducted with 6 children. The results of this experiment showed that the children were able to easily use the proposed system and reach the target destination.