Suspended smoke screen

The invention relates to the technical field of fire fighting, in particular to a smoke-blocking vertical wall, and solves the problems that in the prior art, when smoke is too much, the smoke may overflow from the smoke-blocking vertical wall, the smoke-blocking effect of the smoke-blocking vertical wall is insufficient, and the smoke-blocking effect is poor. A ceiling screen comprises a mounting frame and two side plates detachably connected to the two sides of the mounting frame respectively, and an extension assembly is arranged on one side of the bottom of the mounting frame. When a fire disaster happens, toxic hot flue gas rises to trigger the fire-fighting assembly and the extension assembly, the bottom shielding range of the smoke-blocking vertical wall can be enlarged while spraying fire fighting is conducted on the fire, more toxic hot flue gas can be collected and blocked, meanwhile, a flame retardant can be sprayed to the ground through the anti-spreading assembly, and the fire-fighting effect is