Sharing economy means “just using not owning” resources. With the rise of mobile Internet，online sharing economy comes into vogue and it is very different from traditional sharing economy. The hot spots of current Internet sharing economy are mainly concentrated in sharing of living resources，namely “collaborative consumption”；It will shift to production resources sharing，namely “platform economy”. Sharing economy，with support of platform，will be first ripe in the field of mobile internet. The development space of sharing economy on mobile Internet，will extend to the sharing of knowledge properties beyond the utility of idle physical resources.