Experimental　and　analytical　studies　are　carried　out　to　investigate　the　residual　shearing　strength　of　fillet　welded　connections　after　exposure　to　elevated　temperatures.　Transverse　fillet　welds　and　longitudinal　fillet　welds　were　designed　in　the　test,　and　four　weld　leg　heights　were　considered.　Fourteen　specimens　were　manufactured　for　each　weld　leg　height,　including　seven　heating　temperatures　and　two　cooling　methods,　obtaining　a　total　of　112　specimens,　along　with　8　unheated　specimens　for　comparison.　The　load-displacement　curves　and　stress-load　ratio　curves　were　obtained　to　evaluate　the　shearing　strength,　residual　deformation,　stress　development,　stiffness　and　ductility　of　the　fillet　welds.　Test　results　exhibit　the　transverse　fillet　welds　are　mainly　integral　fracture,　while　longitudinal　fillet　welds　occur　obvious　local　and　global　cracks.　The　weld　leg　height　has　the　greatest　influence　on　the　shearing　resistance　of　fillet　welds,　followed　by　the　elevated　temperature　and　cooling　method.　When　the　heating　temperature　is　between　400　°C-600　°C,　an　increasement　in　residual　shearing　strength　can　be　noticed.　Meanwhile,　the　residual　deformation　is　positively　correlated　with　the　weld　leg　height.　Additionally,　water-cooling　fillet　welds　are　superior　to　room-temperature-cooled　fillet　welds　in　terms　of　stiffness　and　ductility.　Moreover,　the　formulae　for　predicting　the　residual　shearing　strength　of　the　fillet　welds　after　exposure　to　elevated　temperatures　are　proposed.　©　2021