Ventilation and noise reduction device capable of being used for underground fire engineering

The utility model belongs to the technical field of underground fire-fighting engineering construction, and particularly relates to a ventilation and noise reduction device for underground fire-fighting engineering, which comprises a fan for ventilation, and a movable base which is in contact with the ground and is used for moving the fan is fixedly arranged at the bottom of the fan. Four noise reduction assemblies which are distributed from top to bottom and used for conducting noise reduction work are fixedly arranged in the outlet end of the draught fan, the noise reduction assemblies composed of the transverse rods and the noise reduction barrier plates are arranged, the transverse rods can be smoothly placed into the two corresponding installation grooves in the horizontal state, the noise reduction barrier plates are arranged on the transverse rods, and therefore noise reduction is achieved. The connecting blocks installed at the two ends of the cross rod are fixed to the outer wall of the draught fan t