The　concentrations　and　spatial　distributions　of　hexabromocyclododecane　(HBCDD)　and　tetrabromobisphenol　A　(TBBPA)　were　measured　in　tree　bark　from　different　functional　areas　of　Shanghai.　Sigma　HBCDD　(sum　of　alpha-,　beta-,　and　gamma-HBCDD)　concentrations　ranged　from　1.2　x　10(2)　to　6.6　x　10(3)　ng　g(-1)　lw　(median　5.7　x　10(2)　ng　g(-1)　lw)　and　TBBPA　concentrations　ranged　from　48　to　7.2　x　10(4)　ng　g(-1)　lw　(median　2.8　x　10(2)　ng　g(-1)　lw).　The　concentrations　of　Sigma　HBCDD　and　TBBPA　all　followed　the　order　of　industrial　areas　＞　commercial　areas　＞　residential　areas.　The　mean　percentage　of　alpha-HBCDD　in　bark　samples　(44%)　from　Shanghai　was　higher　than　that　in　technical　HBCDD　products,　but　comparable　with　that　in　air.　The　concentrations　of　TBBPA　and　individual　HBCDD　diastereoisomers　between　industrial　areas　and　commercial　areas　were　correlated.　Based　on　the　concentrations　of　HBCDD　in　the　bark,　the　corresponding　atmospheric　HBCDD　concentrations　were　estimated.　Compared　with　the　published　data　for　HBCDD　in　urban　air,　the　estimated　atmospheric　HBCDD　concentrations　in　Shanghai　had　a　relatively　high　level,　and　more　attention　should　be　paid　to　the　pollution　status　of　HBCDD　in　Shanghai.