Abstract: The collaborative development of teacher education in the Guangdong-Hong Kong-Macao Greater Bay Area is required by the construction of the bay area, the win-win cooperation of regional teacher education, and the exploration of new modes of teacher education development. Currently, there are still many problems to be solved in the collaborative development of teacher education in the Guangdong-Hong Kong-Macao Greater Bay Area: the long-term mechanism of collaborative development has not yet been established; there are differences in the governance and operation of collaborative development; and new forms of cooperation have not yet taken shape. Therefore, it is necessary to explore the strategy of the collaborative development of teacher education in the Guangdong-Hong Kong-Macao Greater Bay Area from the perspective of the concept, principle and path of collaborative development.