[Objective] Degradation characteristics of urban wetland of Tianjin City and its driving factors were recognized and their correlation were analyzed to impulse the protection and recovery of wetlands. [Methods] Single factor correlation analysis, multiple stepwise linear regression and typical correlation analysis were used. [Results] The results showed that the increase of population and the rapid development of urban economy were the main artificial factors of wetland degradation, the reduction of water resources resulted from them directly caused wetland degradation. Agricultural population and per capita water resources were main impact factors of coastal wetland. Annual rainfall and sewage were the main influence factors of wetland water quality. Population density was the main impact factors of the wetland biodiversity. [Conclusion] Both natural factors and artificial factors affected the health of wetland. Water shortages, reclamation and construction projects were the main reasons of wetlands degradation in Tianjin City; Meanwhile, aquaculture, rice cultivation and artificial construction were the main factors of transformation of natural wetland to artificial wetland; Sewage and fertilizer use were the main factors for the degradation of wetland function.