The purpose of this study was to examine the difference of teaching knowledge on elementary teachers\' sex and career when they perform Taekwondo class in school. The subjects for this study were 253(74male, 179female)teachers in elementary school in D metropolitan city and surveyed by questionnaires. Collected data was analyzed by 2-way ANOVA method to verify the validity and reliability of questionnaires, to examine the difference of teaching knowledge on teacher\'s sex and career. Tukey method were used for post verification, t-test and one-way ANOVA were adopted for the items which shows interactive effects. The results of this study are as follows; First, understanding on students, more then 16 years of teaching career group shows higher statistical result then 5 to 15 years of teaching career group. Second, on curriculum knowledge, male teachers show higher statistical result then female teachers. Third, on teaching strategy knowledge, male teachers show higher statistical result then female teachers. Among male teachers, less then 5 years of teaching career group shows higher statistical result then 6 to 15 years of teaching career group. Among female teachers, less then 16 years of teaching career group shows higher statistical result then 16 or more teaching career group. Fourth, on lesson objective knowledge, female teachers show higher statistical result then male teachers. ※ Key words : analysis, teacher\'s teaching knowledge on Taekwondo