Abstract:Valuation of ecosystem services is an important indication about reasonableness of land use structure, optimization of land structure and ecological environmental protection. By the method of coefficient of ecosystem services value, this paper quantizes the changes of ecosystem service value caused by changes of land use in Tianjin from 2002 to 2011, also analyses the correlations respectively between changing of ecosystem service value and total population, investment in fixed assets, the level of urbanization and the tertiary industry. The results show that: the main value of ecosystem service in Tianjin is water area, fluctuations of the water area in ??Tianjin would have a dominant effect; With the development of Tianjin and perfecting of local policy, forest land and construction land have a greater influence to changes in the value of ecosystem services; the level of urbanization and value of ecosystem service has been ranked first in terms of comprehensive correlative degree. On this basis, relevant suggestion can be put forward.