In order to study the influence of local corrosion on the static properties of orthotropic plates，the test components with different local corrosion rate were obtained by electrochemical corrosion. The static load test was then carried out，and the numerical simulation was performed. The degradation characteristic of bearing capacity was analyzed. The test results show that，local corrosion leads to a significant reduction in the bearing capacity of orthotropic plates. The failure mode of specimens is described as local buckling，and the existence of local corrosion leads to the change in the buckling position. The internal force and displacement of the roof and longitudinal rib of orthotropic plate are obviously different due to corrosion，and the capacity of bearing together are reduced. The obvious stress concentration of orthotropic plate is caused by the corrosion of the roof. Furthermore， the local uneven stress is responsible for the degradation of static performance.