The present study aimed to investigate the developmental relationship between “what children want to be when they grow up” and time perception in early childhood. The researcher questioned 88 participants (aged from four to six) about two “something to want to be” and time perception. The results showed that, as age increased, realistic answers increased for “something to want to be,” as did and a reason and a way change into a social role and an effort. Time perception became more accurate as age increased, but future perception was difficult for six-year-olds. The answers for “something to want to be” were more realistic for children with a higher time perception score. These results suggest that children may assume possible self by acquiring perception of time.