As an emerging economic model, the sharing economy has developed rapidly over the past decade, revolutionising and upgrading the way people consume goods and services. This model connects idle resources with the da roside through a technological platform, effectively improving the efficiency of resource utilisation, while also challenging the traditional market operation model. The direct impact of the sharing economy on the structure of the economy and the transformation of consumer attitudes as well as lifestyles it embodies have attracted widespread discussion and attention. This study aims to analyse in depth the nature of the sharing economy, its operating mechanism and its impact on traditional economic theory and practice from the perspective of economics, with a view to providing a comprehensive understanding and evaluation of the phenomenon.This paper adopts the methods of literature review, case analysis and comparative study to explore in depth the economic principles and practical applications of the sharing economy. The study first reviews the development history of the sharing economy and clarifies its concepts and characteristics, then analyses its impact on economic theory and market operation, and finally explores the various challenges and coping strategies in the face of the rapid development of the sharing economy. Through this research, the paper aims to provide a comprehensive analysis of the sharing economy phenomenon, offering insights and recommendations for policy makers, market participants, and academics.