In recent years, vertical social communication among strangers characterized by anonymization and personalization is becoming a new approach to social communication in  mobile Internet era. This paper developed a map vertical social platform based on LBS technology and Retrofit network framework in an attempt to solve such problems as the slow shift from online to offline social activities and barriers to communication between strangers . The platform implements real-time map display by connecting to the Golden Map SDK, uses C/S three-tier structure as the system architecture, SQL Server database to store and manage data, MVVM as the backend framework, and constructs four modules of map social, social activities and recommendation, group chat and user center based on the social needs of young people, which effectively meets the anonymous social needs of strangers.