Since the adoption of basic pension system for urban enterprise employees in 1987，social insurance has been collecting by social insurance administrations in Tianjin，and has covered all groups and included all kinds. The characteristics of the collecting can be summarized as follows：unified collection of full insurance，banks acting as agent，first-level clearing，vertical management；supervization by law and integrated operation. The operation of the system goes well. In terms of the insured，Tianjin sees a continuous growth in the number of the insured and payment. The rate of expanded coverage is climbing steadily. The problems exposed in the collection system are：the integration of social insurance collection is to be updated；an inside-outside information sharing mechanism is to be completed；full coverage of the insured and full payment is to be improved.