Abstract: In order to further understand the fire behavior of concrete floor slabs, a fire test on six continuous panels (two by three) was performed in a full-scale steel-framed building via a self-made furnace and some experimental devices. The test building, the design of furnace and experimental contents are introduced, meanwhile relevant experimental phenomena and failure characteristics are recorded. The experimental data including the furnace temperatures, temperature distributions as well as vertical and horizontal displacements of panels and steel beams are also investigated. The experimental results indicate that the temperature gradient is large during the heat-up stage and a temperature lag appears during the cooling-down stage for the heated panels. For the heated steel beams, there is clear temperature gradient during the early heating-up stage but during the cooling-down stage the temperature tends to uniform. Furthermore, the steel beams in fire do not show partial buckling or failure due to the constraints provided by other structural elements. Therefore, the steel beams exhibit better fire-resistant performance in this test than in standard fire tests. In addition, the heated panels at different positions present distinctive deformations due to different boundary constraints. Due to the arc action of heated steel beams, some deflection curves of the heated panels appear plateau during the heating-up stage. Besides, cracking characteristics of the panels are concerned with the fire intensity and boundary constraints, but they do not depend on whether the steel beams around the panels are fired or not.