The Parabolic wave absorber can achieve a good wave elimination effect in a small space,making it a commonly used wave elimination structure in basins or wave tanks.Existing studies have predominantly focused on the wave reduction effects of these devices on regular waves or random waves,which are short waves.However,the wave reduction performance for long waves such as solitary waves is still unclear.In this paper,a physical model test on the wave elimination performance of parabolic wave absorber with grids for solitary wave is carried out in the L-type basin of Hohai University.The results show that the wave elimination performance of the parabolic wave absorber for solitary waves is closely related to the relative wave height.For the grid wave-absorbing surface,the reflection coefficient directly from the wave-absorbing surface for relative wave heights between 0.07 and 0.38 ranges from 0.10 to 0.17.The reflection coefficient for waves transmitted through the grids and reflected by the right inner wall of the flume varies between 0.17 and 0.44.The reflection coefficient of the wave-absorbing surface without grids is in the range of 0.34 to 0.64.Based on the experimental results,the relationship between the reflection coefficients of parabolic wave absorber with and without perforated grids for solitary waves was established to provide a basis for the design and analysis of wave tests.