Abstract: Water resource is an important economic resource and its use ratio is one of the important factors that affect the sustainable development of economic society. Researching the use ration of water resource of Wuhan urban agglomeration from 2005 to 2015 provides basis for the improvement of the area`s use ratio of water resources. The research takes water resource, capital and labor force as its input factors, economic effectiveness as the output factor and establishes the evaluation model on use ratio of water resource under the framework of total factor productivity. The study uses DEA-Malmquist model to investigate Wuhan urban agglomeration`s use ratio of water resource, input redundancy rate and total factor productivity, and makes use of linear regression model to analyze the influence of every breakdown index of total factor productivity on the use ratio of water resource. It turns out that the use ratio of water resource in Wuhan urban agglomeration is decreasing in earlier stage of research range; In 2015, the ratio increases, in this year, the input redundancy rate of water resource in non-DEA effective cities is on the high side overall speaking, the total factor productivity increases at first and then decreases, techch and pech have positive effects on use ratio of water resource, while the change of sech has a negative effect on it, therein the effect of techch on the use ratio is the most remarkable. Using DEA-Malmquist model, we can tell that the use ratio of water resource in Wuhan urban agglomeration is gradually increasing within the research range, and technology improvement can make the use ratio rise of urban agglomeration substantially. This model is able to provide a reference for the use ratio analysis of water resources in urban agglomeration.
Key words：DEA model；Malmquist TFP index；Wuhan urban agglomeration；utilization efficiency of water resources