The invention relates to a corrugated pipe combined structure for a diesel engine, comprising a hoop 1, a transition pipe connecting flange 2, a bushing 3, a corrugated pipe 4, a hoop fastening bolt 5, a locking gasket 6 and an exhaust pipe connecting flange 7; the bushing 3 is sleeved in the corrugated pipe 4 and is mounted on the transition pipe connecting flange 2 and the exhaust pipe connecting flange 7; the two ends of the corrugated pipe 4 are fixedly connected with the transition pipe connecting flange 2 and the exhaust pipe connecting flange 7 through the hoop 1. annular sealing strips connected with the two ends of the corrugated pipe are deformed, so that the pipeline connection of an exhaust system is enabled to be well sealed, the mounting error of an exhaust pipeline can be compensated, the connection sealing and the deformation adaptability of parts at the connection parts of the exhaust pipeline are met, and the dynamic property, the reliability and the use safety performance of an overall unit are effectively guaranteed.