The invention relates to the technical field of shipbuilding, and discloses an oil return connection device. The oil return connection device includes a bellows, a guide pipe, a first seat plate and a second seat plate, and the first seat plate is fixedly arranged on the oil pan of a diesel engine. Above, the first seat plate is provided with a first opening matching the bellows, the second seat plate is fixedly arranged on the lubricating oil storage compartment, and the second seat plate is provided with an oil return hole connected with the lubricating oil storage compartment The second opening of the bellows, the upper end of the bellows is fixedly connected to the first seat plate, the lower end of the bellows is fixedly connected to the second seat plate, the guide tube is arranged in the bellows, and the oil inlet end of the guide tube is connected to the diesel engine oil pan The oil discharge hole of the guide pipe, the oil outlet end of the guide pipe is connected to the oil return hole of the lubricating oil storage tank through the second opening, and the oil inlet end of the guide pipe is provided with a filter screen. The invention has the advantages of convenient assembly, high working efficiency, effective absorption of the vibration generated by the diesel engine, high stability, high safety and long service life.