Abstract: While people enjoy a variety of shared bicycles, the dispute over the deposit also began to enter the trial process. The legal nature of the shared bicycle deposit is the premise and starting point for discussing the deposit issue. The nature of the deposit specified is the pledge of the movable property and, conversely, the guaranty. Due to the high cost, it is common for shared bicycle companies to use the deposit privately, but it must be recognized that the user has ownership of the specific deposit and the company has no right to use it. In order to reduce the risk of not being able to refund the user deposit, the government should further clarify the ownership of the interest, encourage the bank to conduct risk supervision on the deposit account, establish a deposit account information disclosure system and encourage public interest litigation as a solution to the deposit dispute. It can be predicted that the shared bicycle is gradually developing in the direction of credit exemption and membership fees.