As a new Level 3 qualification curriculum practiced in 16-19 education of U.K., Core Mathematics is the result of the demand for Mathematics learning from upper-secondary education, higher education and labor market. In order to develop the Mathematics applied competencies, Core Mathematics is in timetable in forms of optional block or requirement, develops students’ problem-solving skills in teaching, and awards six certificates in Using & Applying Mathematics, Mathematics in Context, Mathematics for Work & Life, Quantitative Reasoning, Quantitative Problem Solving, and Mathematical Studies by five professional organizations, which could be a significant lesson for Mathematics curriculum reform in China high schools.