This article describes the situation of teacher professional development in Taiwan, including the history and the framework of teacher professional development. With diversification of teacher education systems and institutions, teacher professional development in Taiwan is undergoing a gradual governance shift from the model of centralised state regulation to that of new professionalism and marketisation. The evolution of teacher professional development in Taiwan can be divided into three stages. Approaches towards teacher professional development in Taiwan are undergoing a governance shift, with state power being gradually decentralised to local authorities, schools and teachers, and new methods of conceptualising teacher professional development in Taiwan are emerging.