Under the background of the construction of the Guangdong-Hong Kong-Macao Greater Bay Area，the cooperation and development of Guangdong and Hong Kong service industries are facing a new situation with more favorable conditions. The trend of global economic development，the direction of national and local policies，as well as the development realities and needs of Guangdong and Hong Kong，all require closer cooperation between the service industries of the two places. At present，the integrated development of the service industries of Guangdong and Hong Kong is still at an initial stage. Market forces and government guidance are leading the development of the service industries of the two places to take on a new layout and achieve new development. To further promote the integration of the service industries of the two places，Guangdong and Hong Kong still face some constraints. Hong Kong and Guangdong need to jointly innovate the mode of service industry cooperation and promote the development of new business forms，new modes and new platforms for the integration of the service industries，promoting digital enabling service industries.