The revision of Social Curriculum Guide brings not only the concern of content but the concern of curriculum development mechanism. Social Studies Curriculum for 12-year Basic Education Development followed the common mechanism of other curriculum development, but also groundbreaking. Because of anti-curriculum social movement, the team of Social Studies Curriculum Guide was reorganized in 2016. Three types of high school’s Social Studies Curriculum Guide were revised by the new team. And the team held 22 public hearings in accordance with the resolution of the Legislative Yuan. This project will review the mechanism of Social Studies Curriculum for 12-year Basic Education Development, analyze whether each process can achieve its target, and make suggestions for improvement.