Method and application of utilizing plant endophyte to reduce pollution of PAEs in plant

The invention discloses a method and application of utilizing plant endophyte to reduce pollution of PAEs in plants and belongs to the field of soil organic pollution bioremediation and agricultural product safety. In the method and application, the plant endophyte bacillus megaterium YJB3 is colonized in the plants by means of soaking seeds, soaking roots, foliage spraying or smearing, roots irrigating and the like, and then the processed plant seeds are sown in the PAEs polluted soil, or plant seedlings that have been inoculated with bacillus megaterium YJB3 are water-cultured in nutrient solution containing PAEs or planted in soil polluted by PAEs, and accumulation of PAEs in plants is reduced. The method and application have the advantages of simple operation, safety and economy, and that secondary pollution to the environment is not caused and PAEs accumulated in the plants is effectively removed and a risk of agricultural product pollution is avoided, which is of great significance in producing safe agricultural products by effectively utilizing medium and low concentration polluted soil and achieving 'production, while repairing'.