An experimental comparative study was made among 113 second year students in senior high to analyze the effect of schematic teaching on conceptual study. The result showed that: 1) Schematic theory was of universal and guiding significance in the students' study of mathematical concept; 2) Schematic teaching strategy was more advantageous than conventional teaching strategy to the students' study of mathematical concept; 3) Teaching students how to construct schema was an effective way to help with the slower students.