The main achievements of the thesis include : 1 the model design of abyssal aquaculture cages ; 2 the hydrodynamic characters of the cages under the action of pure current in the states of floating vs submerging ; 3 the hydrodynamic characters of the cages under the action of pure wave in the states of floating vs submerging ; 4 the hydrodynamic characters of the cages under the joint action of currents and waves in the states of floating vs submerging ; 5 the effects of currents and waves on the exciting forces and motion of the gravity cages 漂浮状态和下潜状态相比，在单纯流作用下，网箱的水动力特性； 3漂浮状态和下潜状态相比，在单纯波浪作用下，网箱的水动力特性； 4漂浮状态和下潜状态相比，在波浪水流共同作用下，网箱的水动力特性； 5
