Adhesion　ability　of　spoilage　bacteria　isolated　from　large　yellow　croaker　(Pseudosciaena　crocea)　was　provided　as　a　new　direction　to　clarify　the　reason　why　Shewanella　become　the　dominant　spoilage　bacteria　in　marine　fish.　Spoilage　ability　about　three　Shewanella　and　three　Pseudomonas　isolated　and　purified　from　iced　pseudosciaena　crocea　were　identified　by　total　number　of　viable　bacteria　(TVC),　TVB-N,　TMA　and　K　value.　The　adhesion　ability　of　the　six　spoilage　bacteria　to　mucus　of　fish　were　evaluated　to　establish　the　correlation　with　spoilage　ability　of　spoilage　bacteria.　The　results　showed　that　the　spoilage　ability　of　Shewanella　were　stronger　than　Pseudomonas:　the　growth　rate　of　TVC　of　Shewanella　was　significantly　higher　than　that　of　Pseudomonas;　the　amount　of　TMA　produced　by　Shewanella　was　significantly　more　than　Pseudomonas,　and　K　value　increased　more　quickly;　the　increase　of　TVB-N　prouduced　by　Shewanella　showed　exponential　growth　trend　within　cold　storage　days,　while　direct　proportional　trend　by　Pseudomonas.　The　adhesion　ability　of　Shewanella　to　the　mucus　of　large　yellow　croaker　was　higher　than　Pseudomonas.　The　adhesion　ability　to　gill　and　intestine　were　higher　than　which　to　skin,　and　the　adhesion　ability　of　Shewanella　in　high　concentration　of　NaCl　was　enhanced　with　the　concentration　of　NaCl　increased,　while　Pseudomonas　had　stronger　adhesion　ability　to　skin.　Correlation　analysis　indicated　that　there　was　a　positive　correlation　between　the　spoilage　ability　and　the　adhesion　degree　of　spoilage　bacteria.　The　adhesion　ability　of　spoilage　bacteria　to　intestinal　mucus　has　the　most　significant　positive　correlation　with　spoilage　ability.　The　results　indicated　that　the　high　adhesion　ability　of　Shewanella　to　gill　and　intestine　in　the　high　concentration　of　NaCl　was　the　reason　for　Shewanella　to　be　the　dominant　spoilage　bacteria　in　marine　fish.　©　2019,　Editorial　Office　of　Journal　of　CIFST.　All　right　reserved.