Two experiment examined the effect of relative accuracy and social characteristic strength on selective trust in young children aged 4-6. Experiment 1 manipulated relative accuracy, the results revealed that when the accuracy difference is relatively small, children’s choice of accurate dissenter turned into: 4 and 5 years old children chose consensus with low accuracy, 6 years old children chose dissenter with high accuracy ; Experiment 2 manipulated the strength of social characteristics, the results revealed that when the social characteristics were enhanced, 4 and 5 years old children chose smiling inaccurate consensus, 6 year old children chose serious accurate lone informant. To sum up, in conflict situations, relative accuracy and social characteristic strength can all influence children’s selective trust; moreover, this study further verified that the ability to make rational decisions of children would be more and more rational with age.