The　strains　of　Burkholderia　cepacia　(NR　113645.1)　and　Bacillus　pumilus　(NR　043242.1)　were　isolated　from　the　mangrove　rhizosphere　soil　of　Luoyuan　Bay.　Their　phosphate-decomposing　characteristics　and　dynamic　phosphorus-decomposing　process　were　characterized.　HPLC　results　showed　that　the　supernatant　of　B.　cepacia　bacteria　contained　gluconic　acid,　pyruvate,　lactic　acid,　acetic　acid,　and　succinic　acid.　The　production　of　these　organic　acids　led　to　the　dissolution　of　phosphate,　resulting　in　that　very　little　gluconic　acid　in　supernatant　and　a　bad　phosphate-dissolving　effect　of　B.pumilus.　During　the　dynamic　phosphorus　dissolution　of　B.　cepacia,　The　X-ray　diffraction　(XRD)　characteristic　peak　intensity　of　calcium　phosphate　was　dropped　and　the　calcium　phosphate　particles　became　smaller　or　even　disappeared　with　the　prolonged　treatment　time.　In　contrast,　XRD　and　microscope　results　showed　there　were　no　significant　changes　in　the　calcium　phosphate＇s　characteristic　peak　intensity　and　particle　size　when　the　same　experiment　was　performed　in　B.　pumilus.　Dissolving　phosphate　is　the　key　to　solving　the　problem　of　converting　insoluble　phosphorus　source　into　bioavailable　phosphorus　source　in　compacted　soil.　©　2020,　Editorial　Board　of　China　Environmental　Science.　All　right　reserved.