The　Coronavirus　Disease　2019　(COVID-19)　has　caused　massive　losses　for　the　global　economy.　Scholars　have　used　different　methods　to　study　the　transmission　mode　and　influencing　factors　of　the　virus　to　find　effective　methods　to　provide　people　with　a　healthy　built　environment.　However,　these　studies　arrived　at　different　or　even　contradictory　conclusions.　This　review　presents　the　main　research　methodologies　utilized　in　this　field,　summarizes　the　main　investigation　methods,　and　critically　discusses　their　related　conclusions.　Data　statistical　analysis,　sample　collection,　simulation　models,　and　replication　transmission　scenarios　are　the　main　research　methods.　The　summarized　conclusion　for　prevention　from　all　reviewed　papers　are:　adequate　ventilation　and　proper　location　of　return　air　vents,　proper　use　of　personal　protective　equipment,　as　well　as　the　reasonable　and　strict　enforcement　of　policies　are　the　main　methods　for　reducing　the　transmission.　Recommendations　including　standardized　databases,　causation　clarification,　rigorous　experiment　design,　improved　simulation　accuracy　and　verification　are　provided.