Metacognition is defined in short as ‘thinking about thinking.’ Knowledge about memory has received extensive research attention and found to predict the development of children’s memory strategies. In the current study, we explored children’s metasuggestibility as an underlying mechanism of memory suggestibility. Ninety-four 7- to 9-year-olds participated in a metasuggestibility task and a standard misinformation paradigm, with task order randomly assigned. Results revealed 7-year-olds profited more from the metasuggestibility-first order task than older children. We believe because 7-year-olds are not at the threshold of concept attainment they cannot reflect on previous experiences to make this link. Implications are discussed.