Adsorption　behaviors　of　2-bromothiophene　on　the　Rh(111)　surface　were　discussed　with　DFT.　The　results　revealed　that　adsorption　at　the　parallel　hol　site　and　bridge　site　was　the　most　stable.　After　adsorption,　bond　length　of　2-bromothiophene　changed　significantly.　Molecular　plane　was　distorted,　and　C-H　(Br,　S)　in　the　molecule　was　oblique　and　upswept　against　the　metal　surface.　Vertical　adsorption　site　was　less　stable　than　the　plane　adsorption　site,　but　there　was　no　distortion　for　the　thiophene　ring　after　adsorption.　Aromaticity　of　2-bromothiophene　was　destroyed　at　the　hol　and　bridge　adsorption　sites,　and　the　carbon　atom　in　the　thiophene　ring　presented　quasi-sp(3)　hybridization.　After　adsorption　at　the　parallel　hol,　2-bromothiophene　obtained　0.86　electrons　in　total,　and　Rh(111)　surface　lost　2.08　electrons　in　all.