In　the　process　of　construction　of　large-span　spatial　structures,　there　are　many　control　elements,　which　need　to　carry　on　the　dual　control　of　internal　force　and　shape.　The　traditional　control　method　cannot　measure　the　construction　deviation　completely　and　accurately,　and　there　is　a　lag　in　information　feedback.　In　this　paper,　spatio-temporal　information　is　integrated　into　digital　twin　and　a　construction　error　control　method　is　proposed　for　large-span　spatial　structures.　By　analyzing　the　fusion　mechanism　of　spatio-temporal　information　and　digital　twin,　a　closed-loop　control　system　for　structural　errors　before,　during　and　after　construction　is　formed.　Driven　by　the　control　architecture,　the　method　of　structure　simulation　analysis　and　real-time　monitoring　during　construction　is　proposed,　and　the　functional　relationship　between　cable　force　and　cable　length　is　established.　Based　on　point　cloud　data,　construction　error　optimization　detection　method　is　proposed　for　structure　formation　state.　The　nonlinear　relation　between　elevation　change　rate　and　cable　force　deviation　is　formed　and　the　control　measures　of　formation　state　error　are　obtained.　The　experimental　model　of　cable　truss　structure　is　taken　as　an　example　to　apply　and　verify　the　theoretical　method.　The　construction　error　control　twin　platform　is　formed　in　the　experiment.　Driven　by　the　platform,　the　twinning　analysis　and　real-time　monitoring　of　the　construction　process　are　carried　out　to　control　the　error　of　the　structure　formation.　The　results　show　that　this　method　integrates　spatio-temporal　information　into　digital　twin　to　realize　data　integration　processing.　The　optimized　error　detection　method　can　save　30　%　time　cost　and　effectively　control　the　construction　error　within　3　%.　The　integration　of　spatio-temporal　information　and　digital　twin　provides　theoretical　and　algorithm　support　for　the　intelligent　management　and　control　of　large-span　spatial　structure　construction.