This study focuses on the intercultural competence of foreign language teachers in primary and secondary schools and explores the factors that promote the development of intercultural competence. Based on survey data from 430 foreign language teachers in primary and secondary schools,the results of the structural equation modeling are as follows:1 ) Teacher professional development has a significant direct effect on intercultural competence;2)Although the direct effect is not significant,the perceived organizational support can indirectly promote the enhancement of teachers’ intercultural competence through mediating effects;3)Professional development and the perception of organizational support have significant independent and serial mediating effects on intercultural competence. The study provides theoretical support and practical references for the development of teachers’ intercultural competence.