With the rapid development of Chinese society and economy, there is an increasing demand for qualified science and technical personnel for China's modernization. However, students' interest in learning science and their aspirations to pursue science-related professions decline sharply when they are getting old. This issue has become a considerable concern in the field of science education. This survey study sets out to investigate grade 7 students from three regions in Zhejiang province. The research findings of this study have shown that students were highly interested in studying science, but very few would like to become a scientist. Factors such as parents' attitudes to science, peers' attitudes to science, students' school science experience, self-efficacy science learning, images of scientists, informal science experience may shape the formation of students' science aspirations. Moreover, students' science aspirations had significant difference on gender and family background.