Based　on　the　test　results　of　series　quasi-static　tests　carried　out　by　JSCE　Committee,　the　rationality　of　the　numerical　model　for　quasi-static　test　of　soil-underground　structure　system　was　verified.　Then　a　quasi-static　pushover　test　scheme　was　introduced,　the　verified　numerical　model　was　adopted　to　study　the　reasonable　range　of　soil　width　in　the　quasi-static　pushover　test　of　soil-underground　structure　system.　The　results　indicated　that　for　this　quasi-static　pushover　test　scheme,　when　a　(a　is　the　ratio　of　the　distance　from　boundary　to　the　model　structure　to　the　model　structure＇s　width)　is　0.5　to　1.2,　error　of　the　seismic　capacity　of　the　key　structural　components　obtained　by　the　test　method　is　relatively　small.　　©　Published　under　licence　by　IOP　Publishing　Ltd.