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Abstract
The research refers to the factors that affect the economic efficiency of the interlaced aquaculture model in Phu Xuan commune, Phu Vang district. Based on the regression analysis method, the economic efficiency of this model depends on five core factors, which include feed cost, labor cost, shrimp stocking density, crab stocking density, and stocking density. Besides of above elements, the aquaculture efficiency of households is also caused by other factors such as the cost of petrol and electricity, the cost of drugs, chemicals, and the cost of materials. With a lot of elements impacting the aquaculture efficiency of households in Phu Xuan commune, Phu Vang district, the study proposes a number of solutions to improve the efficiency of the interlaced aquaculture model in the future.