Technology is making continuous improvement. It becomes an inevitable trend that modern technology and audio-visual media enter museums. Among these, interactive exhibition is a kind of exhibition pattern which uses visions, moving pictures, sounds, graphs & characters and other media. What it wants to reinforce is the interactive process with audience, attracting audience to learn actively and making audience leave an impressive image and pleasant visiting experience during their visit process. This study is to use National Science & Arts Museum as study case to deal with what the behavior process of family-group visitors’ is and what their reaction and influence of learning & sentimental attitude are when they visit an interactive exhibition at science museums. First of all, this study is to start with the relative literature of “ interactive exhibition” and “ visitor search “. Referring to the structure of visitors’ evaluation and considering the visiting characteristics of our people, this study investigates the behavior interaction, learning interaction and sentimental interaction of family-group visitors in the research field. This study attempts to explore all of audience’s behavior occurred in the exhibition space via non-participating observance and questionnaire. Nowadays, it is a trend that museums stress in audience’s demand. This study hopes to provide museums’ audience with a bit consideration dimension on research. This study finds the following: 1. Most of family-group visitors to museums primarily appeal to “ family leisure entertainment”. In the exhibition hall, they incline to search high “ entertainment” exhibition to produce interaction and learning process via personal operation and parent-child participation together. 2. The observance finds that it is children who take the “ leading” role among most family groups and lead family visitors to have visiting activities in the exhibition hall. Also, it is almost children who operate exhibitions actively and parents offer assistance or play the role of “ illustrator” aside at a proper time. 3. Good Interactive exhibition has its effect to the learning of family visitors. When creating a favorable learning scenario, interactive exhibition can obviously promote the learning atmosphere to family visitors than that of other patterns exhibit. 4. After visiting the exhibition hall of children’s science park, family visitors have their feelings, which are all effected by three portions including the fundamental attributes, the satisfaction degree to each exhibition area and the interest upgrade to exhibition. Among these, the times of family-group visiting, the feelings after visiting each exhibition area and whether the interest is upgraded to family audience decides the overall feeling after visiting to children’s science park for a family group.