The　current　engineering　construction　quality　control　using　the　installation　of　sensors　and　other　ways　of　quality　control,　not　only　the　efficiency　is　affected,　and　can＇t　trace　the　quality　problems　of　each　construction　link,　resulting　in　a　delay　in　the　construction　period,　the　quality　problem　rectification　effect　is　poor.　Aiming　at　the　defect　of　appeal,　the　real-time　quality　control　method　of　assembly　building　engineering　based　on　BIM　technology　is　studied.　According　to　characteristics　of　prefabricated　building　construction　process,　analysis　of　factors　influencing　the　modular　construction　quality.　The　appropriate　influencing　factors　were　selected　to　establish　the　quality　control　index　system,　and　the　entropy　weight　method　was　used　to　determine　the　index　weight.　According　to　the　index　weight,　the　application　of　BIM　technology　design　in　different　construction　link　quality　control　plan,　realize　the　real-time　control　of　the　quality　of　engineering.　In　the　actual　case　application,　the　effective　rectification　rate　of　project　quality　problems　is　as　high　as　98.5%　on　average　after　using　BIM　technology,　and　the　construction　period　is　effectively　shortened.　©　2022　SPIE.　All　rights　reserved.