Fire extinguishing device for outer wall of building

The utility model relates to the technical field of building fire fighting, in particular to a building outer wall fire extinguishing device. The building outer wall fire extinguishing device is installed on a building and comprises a water supply pipeline and a plurality of water distribution pipes, the water distribution pipes are communicated with the water supply pipeline, first control valves are arranged at the joints of the water distribution pipes and the water supply pipeline, and fire inductors are arranged on the water distribution pipes and are in signal connection with the first control valves. A plurality of water outlets are formed in each water distribution pipe and are exposed out of the outer wall of the building. The building outer wall fire extinguishing device can control the water supply pipeline to supply water to the water distribution pipe and spray water to the outside of the outer wall when sensing that a fire spreads to the outside of the building, so that a water curtain is formed