With the popularization and application of new generation information and communication technologies, the sharing economy has become an important form of economic and social development. The fundamental reason why the sharing economy can grow so rapidly in a short period of time lies in its unique earning mode. This article, taking Mobike as an example while coupling with the profit-making experience of the sharing economy industry, deeply analyzes its earning mode, unearths multiple driving factors of corporate earnings, and summarizes many earning modes including "periodic lease + deposit" earning, advertising earning, financing expansion earning, listing valueadded earning and etc. However, at present, the earning mode of the sharing economy is not yet mature, and there are problems such as weak profitability and lack of long-term profitability. This requires bike-sharing companies developing the concept of "user first" and form a comprehensive earning mode through a multi-channel operation and development approach. At the end, this paper provides reasonable and feasible suggestions for the sustainable profitability of Mobike.