According to the planning and construction of industry mode in the newly reclaimed coastal district of Tiaozini of Jiangsu Province, the benefits of the traditional agriculture mode and the ecological agricultural industry mode in coastal reclamation areas are discussed from the aspects of direct economic benefits, cost of environmental pollution and ecological benefits. The results show that under the same land utilization scale, compared with those of the traditional agriculture mode, the direct economic, ecological and comprehensive benefits of the ecological industry mode increase by 1. 37, 1. 65 and 2. 05 times, respectively. Meanwhile, the cost of the environmental pollution decreases by 100%. By replacing the traditional agriculture mode by the ecological industry mode, the direct economic and ecological benefits of the coastal reclamation areas are significantly improved. This study may provide important theoretical and practical references for the transition of the traditional agricultural industry mode and the ecological construction in the coastal reclamation areas.