Chinese vast territorial seas and rich inland waters constitute a long glorious history of navigation history,and have left huge underwater cultural heritages.As to underwater detection of buried ancient wooden shipwrecks,underwater archaeology is anxious to seek support from the related disciplines of technology,because the ancient wooden shipwrecks carry the dream of restoration of Chinese marine culture.In this paper,the physical model of field test and analysis of the wooden shipwrecks confirmed that the wooden shipwreck can cause the change of the surrounding magnetic field,and the authors also found out the field source material that caused the change of magnetic field.These results confirm the feasibility,reliability and validity of the magnetic method in detecting wooden shipwrecks,the application conditions for magnetic detection of wooden shipwrecks are also discussed in this paper.