Using CFPS(China Family Panel Studies)data from 2010 to 2018,we employ a progressive Difference-in-Differences approach to unveil that the introduction of bike-sharing significantly boosts per capita household expenditure by 3.9%to 6.8%,along with an increase of 3.8%to 4.9%in dining-out ex-penses.The analysis of mechanisms indicates that bike-sharing reduces the time cost per unit of consump-tion by alleviating traffic congestion,increases leisure time by reducing commute duration,and enhances net income by lowering rental expenses without affecting wage.Our findings provide evidence for the im-pact of the sharing economy on consumption and its mechanisms.