Free floating bicycles,invented with the development of mobile payment and GPS,are considered as the most effective way to moderate traffic congestion and solve‘the last kilometer’problem. However,it brings severe disorderly parking problems due to the fast growth of bicycle-sharing,which exerts great pressure on urban management. Therefore,how to motivate users’ willingness to park bicycles orderly and form a benign voluntary cooperation mechanism is significantly important for the sustainable development of cities and society. In order to solve this problem,extended Theory of Planned Behavior( TPB) framework is constructed with the introduction of perceived institutions and perceived consequences from the perspective of social psychology. The influences of the factors,such as user’s behavioral attitude,subjective norms,perceived behavioral control,perceived consequences and perceived institutions,on behavioral intentions are analyzed. The results suggested that:(1) perceived behavioral control,perceived consequences,behavioral attitude,perceived institutions and subjective norms could affect behavioral intention positively,but its force abated successively;(2)all the factors could affect behavioral intention significantly,except subjective norms:(3)perceived consequences and perceived institutions could affect behavioral intention directly and indirectly,and the indirect effects are statistically significant. Based on the above results,the possible reasons and addressed several suggestions are discussed. Although this research is conducted from the perspective of individuals,users’ decisions are largely affected by external environment. In order to fundamentally mobilize users’ willingness to cooperate,government,individuals,enterprises and the whole society should work together to achieve this. The conclusion of this study can provide the basic theoretical support for the management of urban bike-sharing.