This paper attempts to explore children's ethnic relationship among the Hans and Aboriginals in terms of ethnic image and social distance. Data were collected from elementary students with diverse ethnic backgrounds in Taipei area, and were analyzed in relation to three dimensions: (l )the comparative study on ethnic image of the Hans and Aboriginals, . the analysis of ethnic distance between Han's group and Aboriginal group, and (3)the prediction and explanation of variations in the variables, particularly focusing on effectiveness of predicting ethnic image. The major findings are: 1. In general, aboriginal students indicate positive attitudes in ethnic image. They agree on the features of their own tribe, and appreciate other's merits. It seems that they have less ethnic prejudice than the Hans do. 2. On the whole, differences between Han children's image of Han and Aboriginals are significant. Han children show obvious ethnic prejudice and preference. 3. To summarize, ethnic prejudice in children is not so significant as it in adults. 4. In school life, there is no forcible phenomenon of ethnic separation among Han children and Aboriginal children. It is observable that Aboriginal children's social interaction, no matter in class or not of class, is within their ethnic group more often than in Han's group. On average, one of seven Han children has a clear gap with Aboriginal children. 5. The effectiveness of predicting ethnic distance, formal social interaction and informal interaction are noticeable in the variables of having Aboriginal friends, positive image of Aboriginals and being an Aborigine. 6. One fifth of the students who are not aware of their ethnicity show worse ethnic relationship than those who are aware of.