The smoke-blocking vertical wall is a device for separating smoke areas in underground and large space smoke exhaust systems of high-rise civil buildings. When the fire control center sends out fire alarm signals or directly receives "smoke sense" signals, the soft smoke-blocking vertical wall placed above the ceiling quickly falls to a set height, forming smoke-blocking separation. High temperature smoke is discharged outdoors by exhaust fan, which creates environment and time for people's life-saving and evacuation in fire alarm area. The box of electric products is made of 0.8 to 1.2 mm ordinary carbon steel plate (or stainless steel plate) and the cord is made of the latest materials in China. Its quality meets the British BSD476 standard and its combustion performance. Grade B is GB8624 standard B1, anti-fatigue (lifting) can reach more than 2000 times, transmission components are made of high-quality steel, and the shell is closed.