Based on the similarity theory and simulation experiment, main construction parameters of immersed tunnel are researched. The following items related with the simulation experiment are introduced, which include the model design, experiment process, important points for attention and the technical requirements. A large of the immediate data is obtained by the experiment. On the basis of analyzing test results, the main original parameters on construction of the immersed tunnel are verified and analyzed. The achievement of the experiment can be used to provide reference for the future engineering construction of immersed tunnel.