[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(COD_Mn), 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, COD_Mn 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.