[Objective] To study the trinity dynamic construction comprehensive efficiency rate of "resource efficiency-environment efficiency-economic efficiency" in the construction of railway dregs field, in order to provide the basis for the study of soil and water conservation and long-term benefit brought by the application of "four sections and one environmental protection" in the construction of railway dregs field. [Methods] The green construction concept and the multidimensional benefits of soil and water conservation was considered. The traditional Malmquist model was employed as a foundation. The construction of dregs field was taken as the research subject, the Malmquist model (QMPI) for construction of railway dregs field was established by introducing the unexpected production caused by construction, with the fully consideration of the utilization of resources and the long-term effects of dynamic investment. [Results] QMPI fully explained the dynamic construction comprehensive benefits of the "resource efficiency-environmental efficiency-economic efficiency" of the railway dregs field. The construction total factor productivity and decomposition efficiency of QMPI were calculated based on the DEA-SOLVER PRO software platform. Meanwhile, the redundancy rate of each element was analyzed. [Conclusion] The construction comprehensive efficiency rate is positively correlated with resource efficiency change (REC)and environment efficiency change(EEC), that is, green construction will promote the comprehensive benefit rate of construction. At the same time, the promotion of the "four savings" will promote "one environmental protection" and thus work together for higher construction benefits.