In this thesis, a field experience activity support system is designed and implemented for improving social skills of children with developmental disabilities. The proposed system is designed to allow the students to experience various field activities around their local community. The proposed system has the following characteristics. First, it can improve effectiveness of field experience by providing very practical pre-study information to students. Second, the systems provides very practical and real-world problem-solving abilities rather than providing simple experience and superficial information. Third, the system allows students to change the contents according to their local community environments and purpose of use. Fourth, the system can be used as education for living at home as well as field experience study at schools. After applying the proposed system to students with developmental disabilities, the following positive results are obtained. First, the system have good effect on students with severe developmental disabilities when the system is used for prestudy. Specially those students are highly interested and motivated on study subjects. Second, at real field experience study place, students are well adapted and are very interested in their activities. Third, in the light of post-evaluation after field experience, it is reported that lots of study contents remain in their memory.