To　study　the　effect　of　joint　stiffness　on　seismic　response　of　single-layer　cylindrical　reticulated　shell,　ANSYS/LS-DYNA　was　used　to　build　the　reticulated　shell　models.　Two　types　of　models　were　built　by　＇Shelll63　element＇　and　＇Beaml61　element＇　respectively.　The　key　difference　between　these　two　types　of　models　was　that　the　real　size　spherical　joint　could　be　built　in　the　shell　element　model,　and　this　shell　element　joint　load-carrying　FEA　(finite　element　analysis)　result　was　close　to　the　continuum　element　joint　model　FEA　result.　These　two　types　of　models　constituted　a　group　to　be　compared　with　each　other.　By　changing　the　structure　parameters　(length-width　ratio,　rise-span　ratio　and　span),　3　more　groups　were　gotten.　Through　comparing　the　top-point　seismic　responses,　the　conclusion　is:　when　the　structure　parameter　is　changed,　the　seismic　responses　of　these　two　types　of　models　are　changed　obviously　different;　When　structure　parameter　is　a　constant,　the　seismic　responses　difference　of　the　two　types　of　models　are　changed　widely.　So,　it　is　recommended　to　consider　the　joint　stiffness　when　seismic　response　of　this　type　structure　is　studied.