A method for sewage treatment using Eco concrete was presented. In this method, the pollutants in wastewater degraded and eliminated in multi layers repeatedly by means of synthetic action occurring on the eco concrete which include physical, chemical, physicochemical and biochemical actions. The sewage purification was carried out through two step. At first, the sewage was pre treated using side filtration technology in order to remove suspended solids. Second, sewage flowed through a disposal device with the style of drag flow which was composed of eco concrete. Also, the special purifying function material with the style of slow release was added into eco concrete, which can promote the purification effectiveness and durability of eco concrete. On the base of studying in laboratory, the in site sewage purification test was made at a serious pollution river. The results show that the decrease ratio of COD, BOD, TP and TN may reach respectively 50%, 50%, 70%, and 20%. This technology may not only expand the application range of concrete, but also provide a good way for sewage disposal with the advantages of low investment expenses, good effect and low operation cost.