The invention provides a Bacillus megaterium Bacillus megaterium PP84. Deposition unit: China microorganism preservation management committee general microbiological center (CGMCC); address: Institute of Microbiology, No. 3, academy, No. 1, Beichen West Road, Chaoyang district, Beijing, China; deposition date: July 20, 2016; deposition number: CGMCC No. 12798. The Bacillus megaterium Bacillus megaterium PP84 has the advantages of having the capacity of using glyphosate as carbon and nitrogen sources; having the resistance capacity on heavy metals; being capable of decomposing and assimilating glyphosate, and adsorbing the heavy metals simultaneously; achieving the purpose of degrading the glyphosate in the environment.