The Education Bureau (EDB) of Hong Kong has published an official document related to computational thinking (CT) and coding education in 2020, named as the “Computational Thinking - Coding Education: Supplement to the Primary Curriculum”, to facilitate teaching and learning of computational thinking and coding education in local senior primary schools. At the same time, the Curriculum Development Council (CDC) of Hong Kong has also encouraged and recommended schools to promote a school-based CT education, to meet the needs of 21st century learners. To examine the effect that integrating computational thinking into mathematics education in senior primary education, a 3-year research will be conducted from January, 2021 to December, 2023, to demonstrate the importance of the concepts of integrated teaching which may change teachers’ views from teaching computational thinking to programming independently, to considering teaching computational thinking as applicable to any other fields, especially in mathematics education. In addition, the study aims at helping computational thinking educator to understand what computational thinking is, how to teach computational thinking in mathematics education as an integrated subject, and to develop computational thinking educator the essential skills and pedagogical knowledge in teaching computational thinking activities. Copyright © 2021 Global Chinese Conference on Computers in Education.