To　explore　the　influence　of　selfishness　and　panic　on　large-scale　group　evacuation　behavior　strategies,　we　set　up　an　improved　public　goods　evolutionary　game　model,　improved　Fermi＇s　golden　rule　by　introducing　a　selfishness　coefficient　and　analyzed　the　relationship　between　selfishness　and　group　evacuation　efficiency　in　a　non-panic　state.　We　determined　the　panic　state　of　a　group　based　on　panic　threshold,　reproduced　the　transformation　process　from　non-panic　to　panic　and　discussed　group　evacuation　behaviors　under　different　thresholds.　The　results　show　that　the　higher　selfishness　coefficient,　the　faster　group　evacuation　efficiency　drops.　By　lowering　selfishness　coefficient,　we　can　maintain　group　evacuation　efficiency　at　a　high　level.　We　can　take　effective　measures　to　reduce　the　panic　threshold　of　a　group,　thus　avoiding　group　panic　and　stampedes.