Building a new platform of talent development in the Guangdong-Hong Kong-Macao Greater Bay Area is particularly important for the high-quality development of talents. This report firstly analyzes the overall status of talent development in the Greater Bay Area as well as deeply examines the talent development status and needs，talent policy implemented of the core cities. Secondly，it explores the current construction status of the talent development platform from the aspects of the talent policy system，economic and social development，industrial transformation and upgrading，and talent social security. Then，this report analyzes the problems and challenges of the construction of talent development platform in the Guangdong-Hong Kong-Macao Greater Bay Area，including high-level talent quantity relatively small and talent structure unreasonable，innovation and entrepreneurship ability of talents is still insufficient，mechanism of talent cultivation，introduction，and flow is not complete，talent development guarantee mechanism needs to be improved，and talent development environment is poor. Finally，it summarizes the advanced experience of talent development and platform construction at home and abroad，and puts forward ideas and suggestions for building a new platform of talent development in the Guangdong-Hong Kong-Macao Greater Bay Area，namely，optimizing the Industry-University-Research collaborative innovation system，and vigorously cultivating innovative and entrepreneurial talents，improving the mechanism of talent cultivation，introduction and flow，and implementing talent evaluation and incentive measures，improving the talent development guarantee mechanism and the supply capacity of talent life services，and optimizing the talent development environment，and creating a good atmosphere of innovation and entrepreneurship.