A　modal　testing　method　for　latticed　shell　structures　was　presented.　The　technique　combined　single-point　transient　shock　excitation　and　complex　mode　indication　function　method.　Through　the　optimal　position　selection　of　shock　excitation,　intensive　modals　could　be　separated　and　the　overlap　between　intensive　modes　lightened.　A　complex　mode　indication　function　method　was　an　advanced　modal　identification　method　in　the　frequency　domain.　It　could　automatically　determine　modal　parameters　with　a　high-speed,　so　it　is　better　than　traditional　peak-pick　method.　Numerical　simulation　was　done.　The　results　show　that　it　has　good　validity　and　accuracy　to　modal　parameter　identification　of　reticulated　shell　structures.