Abstract:[Objective] Using the combined floating bed of Suaeda salsa to repair the eutrophic and high saline mariculture waste water, to provide a new method for the treatment of serious marine environmental problems.[Methods] This paper designed a new type of combined floating bed of Suaeda salsa with physical, chemical and biological synergy. The total nitrogen in eutrophic mariculture tail water(TN), and total phosphorus(TP), potassium permanganate index(CODMn), ammonia nitrogen(NH4+-N) were measured and its removal effects on them were studied and compared with the ones of traditional floating bed.[Results] The results showed that the removal rates by the combined floating bed of TN, NH4+-N, TP, CODMn were 62.14%, 93.94%, 73.05%, 60.91%, increased by 27.36%, 21.27%, 19.51%, 12.43% as compared with ones of the traditional floating bed.[Conclusion] The combined floating bed has obvious ability to repair the eutrophic and high saline mariculture waste water.