The　connected　vehicle　(CV)　that　integrates　vehicle　intelligence　and　communication　network　technology　is　one　of　the　main　methods　to　approach　intelligent　transportation,　which　is　of　great　significance　in　solving　the　problem　of　road　congestion　and　traffic　accidents.　As　an　important　application　field　of　CVs,　multi-vehicle　formation　driving　can　realize　the　collaboration　of　perception,　decision　making,　and　control　among　vehicles,　which　has　a　great　promotion　effect　on　improving　road　traffic　safety,　reducing　fuel　consumption,　and　improving　traffic　congestion.　In　order　to　ensure　the　safe,　reliable,　and　efficient　operation　of　the　CV　platoon　under　the　actual　road　network,　weather,　and　various　application　scenarios,　a　large　number　of　tests　need　to　be　conducted　to　validate　the　platoon　before　it　is　applied.　Simulation　studies　are　still　indispensable　considering　the　cost　and　risk　of　real　vehicle　testing.　This　paper　reviews　the　current　status　of　research　and　application　of　vehicle　group　behavior　simulation　in　a　CV　environment　from　four　aspects:　simulation　tools,　modeling　methods,　evaluation　indicators,　and　application　scenarios,　and　discusses　the　development　direction　of　CV　simulation　testing,　which　provides　a　framework,　method,　and　technology　reference　for　future　research　and　application　of　vehicle　group　behavior　simulation　in　a　CV　environment.　©　2022　Elsevier　B.V.