As an innovation of the Internet business model, the sharing economy has changed the prepaid deposit collection model and the mismatch of the return period, resulting in the financial deposit of the user deposit and the return of the user deposit when the bicycle enterprise market exits. The“exemption”and“second retreat”modes encouraged by the Ministry of Communications are suspected of being unfounded and over-regulated. The prepaid deposit can be characterized as a money pledge based on the jurisprudence and the interests of all parties, so that the deposit property belongs to the user. And by satisfying the necessity and specificity of establishing the money pledge, the third-party escrow is strengthened to strengthen the shared bicycle company’s account isolation and proper custody of the prepaid deposit, and enhance the transparency of deposit collection, deposit and return information, and make reasonable use of the deposit. Establish an industry risk fund and simplify the unified supervision body to effectively protect the property security of the shared economy prepaid deposit.