The invention provides a test method for testing the joint bearing capacity of corrugated plates for culverts or tunnels. The method comprises the following steps of: selecting two corrugated plates,respectively welding a bearing plate at one end of each of the two corrugated plates, and fixedly splicing the two corrugated plates through a corrugated plate connecting piece to manufacture a corrugated plate test piece; installing the corrugated plate test piece on a press machine, and performing alignment adjustment; starting the press machine, loading the corrugated plate test piece, and recording the applied load and the deformation of the corrugated plate test piece in real time; selecting a plurality of groups of corrugated plate test pieces with different models, and repeating the test steps mentioned above; and performing data comparison and analysis to obtain the longitudinal joint bearing capacity of the corrugated plate connecting piece through calculation, wherein the press machine is used for loading the corrugated plate test piece in a graded constant-speed loading mode.