Overseas international Chinese language education is of great significance.The issue of adaptation in international Chinese language education, namely how to integrate into local societies and take root, blossom, and bear fruit, is a core challenge universally faced in the context of significant regional and national differences and cross-cultural backgrounds. It is of great significance to analyze and think about the stable development of overseas international Chinese language education and teaching based on the mature academic theory system. The symbiosis theory aligns closely with overseas international Chinese language education, providing a theoretical basis and analytical perspective for its successful integration and establishing roots abroad. From the perspective of symbiosis theory, the factors influencing the adaptive development of overseas international Chinese language education can be mainly divided into external and internal factors. External factors primarily encompass bilateral political, economic, and international relations, while internal factors mainly pertain to the “three educations” adaptability issue within overseas international Chinese language education itself. The adaptive development of overseas international Chinese language education first and foremost requires the construction of a symbiotic environment that harmonizes with local educational systems, frameworks, and resources, the selection of an appropriate symbiotic model, and the establishment of a symbiotic system and adaptive mechanism for overseas international Chinese language education.