The nine-year integrated curriculum has been put into practice for seven years. The outcomes of this education reform have caused a lot of discussion. The purpose of this study was to investigate the impacts of this curriculum on students' attitudes related to science. The Attitudes related to Science Questionnaire (Chiu et al., 2002) was administered to 889 junior high school students who received the nine-year integrated curriculum. The results showed that the students who received the nine-year integrated curriculum had lower attitudes related to science than the students who didn't receive this curriculum, especially in ”Be curious and keep suspecting”, ”Deliberate cautiously”, ”Respect facts, and be modest and objective”, ”Responsible” and ”Social conscious of science”. The results also showed that the differences of attitudes related to science among students decreased after the curriculum was implemented. After the nine-year integrated curriculum, attitudes related to science in the students of the large schools decreased significantly, and attitude towards science in the students of the small schools improved significantly. The difference of attitudes related to science in sexuality also decreased. The nine-year integrated curriculum did not impact the influence of family income and parents' level of education.