The invention relates to the technical field of material corrosion and protection, in particular to a test device for simulating a spray splash area. It includes a box body equipped with a solution circulation system, a spray generating device covered with a water-absorbing material coating layer is set in the middle of the box body, and a corrosion sample stand, a ventilation device, and a temperature detection and control element are set around the spray generating device. The spray generating device is respectively connected with the solution circulation system and the power device, and the power device is connected with the control system including program control. The invention can generate splash solution particles, simulate the spray splash environment, realize precise control of spray splash efficiency, spray splash rate, spray shape, etc., and make the simulated corrosion test results have good correspondence with the on-site corrosion results in the spray splash area. Therefore, the experimental efficiency is improved, manpower and material resources are saved, and the cost of the experiment is reduced; at the same time, the experimental data collection is convenient, which ensures the integrity of the experimental data and the reliability of the experimental results.