A　environment-friendly　microwave-assisted　extraction　used　to　extract　trace　mercury　compounds　from　fish　samples,　and　a　ultra-sensitive　method　for　the　analysis　of　Hg(II),　methylmercury　(MeHg)　and　ethylmercury　(EtHg)　by　using　capillary　electrophoresis-inductively　coupled　plasma　mass　spectrometry　(CE-ICP-MS)　were　described　in　this　study.　The　extraction　method　is　environment-friendly,　simple,　effective,　and　can　be　used　to　extract　trace　mercury　compounds　in　fish　samples　with　a　satisfied　recovery　within　several　minutes.　The　CE-ICP-MS　analytical　method　has　a　detection　limit　as　lower　as　0.021-0.032　ng　Hg/mL　for　MeHg,　EtHg　and　Hg(II),　and　can　be　used　to　determined　ultratrace　MeHg,　EtHg　and　Hg(II)　in　natural　water　and　fish　samples　directly　without　any　preconcentration.　With　the　help　of　the　above　methods,　we　have　successfully　determined　MeHg,　EtHg　and　Hg(II)　in　dried　fish　(Tapertail　anchovy)　muscle　and　natural　water　within　25　min　with　a　RSD　(relative　standard　deviation,　n　=　6)