Abstract: The effects of the number and rows of welding spots on static strength and fatigue strength of the corrugated plate were studied and the structural parameters of the corrugated plate welding spot were optimized. Firstly,the static strength simulation of corrugated plate was carried out with the Workbench at different welding spot number and rows connection modes. Then,the simulation results were analyzed and processed. The results showed that the minimum equivalent stress of the corrugated plate is 43. 12 MPa at using 3-row welding,with left and right edge distance of the welding spot 10 mm,top and bottom distance 2 mm,and horizontal distance 54. 4 mm,respectively. The simulation results of fatigue life of corrugated plate is 2.84E6 times,which meets the requirement of fatigue strength under the actual working conditions.The studies will lay a theoretical foundation for the experimental study on the fatigue performance of corrugated plate.