In order to overcome the heterogeneity of mathematics education in South Korea and North Korea in preparation for the future integration of North and South Korea, research on North Korean mathematics education needs to be studied qualitatively in various aspects and fields. In order to do this, it is necessary first to elaborate and analyze the results of the research on North Korean mathematics education reported so far, to find important implications and find out the research fields that have been neglected in the meantime. Therefore, this study analyzed the trends of previous studies for establishing the direction of future studies on mathematics education in North and South Korea. As a result, it can be seen that the study on North Korean mathematics education in Korea is limited to curriculum analysis, textbook comparison, and comparison of mathematical terms between North and South.