The invention discloses a fish-vegetable symbiotic type ecological floating bed and a raising method thereof, and belongs to the fields of aquaculture, environment-friendly fishery and cyclic and effective resource utilization. The floating bed is a closed entirety formed by sequentially connecting a fence protection net, a floating bed body and a net cage from top to bottom in a pond, and vegetables are planed on the floating bed body. The method comprises the steps of 1 fish fingerling selecting and feeding, 2 vegetable selecting and managing, 3 fish and vegetable disease and pest preventing and controlling, 4 floating bed floating force adjusting, 5 net cage cleaning, 6 oxygen aeration equipment using and 7 physical and chemical index measuring. The floating bed is simple in structure, low in cost and significant in produce effect, can effectively improve the water body quality, increase the water body transparency, reduce water resource consumption, prevent aquatic animals from gnawing vegetable roots, ensure good growth of plants, improve the decontamination effect, product organic vegetables, effectively reduce fish diseases and improve the fish flesh quality, and is suitable for eutrophicated water bodies such as polluted rivers, reservoirs and lakes and beneficial for being vigorously popularized.