Different zones of the marine environment were simulated by a designed marine corrosion test device in laboratory, through which the corrosion rate was tested by weight loss method applying separate specimens and electrically connected specimens, separately, and the test data were compared with those by seawater exposure method. The results showed that the corrosion in splash zone was the most severe whether for separate specimens or electrically connected specimens, and for the latter, the experimental data were more reasonable to simulate a continuous marine structure throughout the different zones in marine environment. The feasibility and reliability of the simulation device and the experiment method were also verified.