With both the facilitation of governments of different levels and the participation of different parties，the interactions of teenagers in Guangdong-Hong Kong-Macao Greater Bay Area have achieved great progress in 2020. In 2020，the government improves its guide and management in for the study tour bases. With the guide of governments，the establishment of study tour base of teenagers has become more standardized and new developments has emerged with the exploration of new management modes by different managers. The interactions of teenagers in Guangdong-Hong Kong-Macao Greater Bay Area will be rapid，healthy and sustainable in the future.