The independence investigation study using the Internet not only acquires knowledge about the concept for the investigation, but it is possible to also acquire circumference knowledge and to learn a related information independently by this. However in the existing VOD system it will not be considered that circumference knowledge can be acquired and there is also no function to show combining a text, a picture, and video effectively. In this paper in order to make easy to learn not only the contents of a video but circumference knowledge, the keyword and the relative word suitable fbr the contents of a video were detected, and the interface for making those information easy to investigate was built.