Under the background of globalisation and digitalisation，a new generation of folk netizens，as new messengers of cross-cultural communication，spread Chinese culture and promote international exchange through international social media platforms such as YouTube and TikTok. This study focuses on the behavioural characteristics，content patterns and audience reactions of folk netizens in cross-cultural communication，and also explores the behavioural risks in the process of cross-cultural communication by folk netizens. The study finds that folk netizens’ cross-cultural communication is characterised by grassrootsness，diversity and interactivity，and has advantages in increasing communication contacts，building cultural bridges and innovating content patterns. In order to address the risks in the process of communication，the article puts forward targeted recommendations，including rationalisation of communication content，precision of communication strategy，deepening of communication connotation，prudence of communication norms，and anticipation of communication guarantee，etc. The article aims to provide guidance and suggestions for the cross-cultural communication of folk celebrities，and to promote the folk subject to become an alternative force in cross-cultural communication，so that it can form an advantageous complementarity with the official communication，and to help develop a comprehensive，multi-layered，and wide-ranging intercultural communication platform. The aim is to provide guidance and suggestions for folk netizens to become a substitute force in cross-cultural communication，so that they can complement official communication and help open up a new pattern of all-round，multi-level and broad international communication.