The purpose of this study is to help the efficient and practical teaching and learning of a mathematic subject in schools by comparing and analyzing the sixth and seventh curriculum of mathematics on the basis of the demand that the current curriculum should be improved, made, and adapted newly. This paper 1. studies the meaning of the curriculum and the theory of the curriculum of mathematics 2. looks into the history of the curriculum of mathematics from the first to the sixth. 3. compares an outline of the sixth and seventh curriculum. As a result, it exhibits the great difference in giving students choices for subjects and nullifying the meaning of the subject distinction, which means a new system with consistency based on the concept of a grade system instead of the present school system. 4. summarizes the result of comparing and analyzing the sixth and seventh curriculum which will be practiced from the year 2002 5. The beginning of the seventh curriculum in high schools will be from the year 2002 and the ministry of education is expected to take proper actions for its successful settlement, yet at this point this study gives some suggestions for its smooth and normal operation.