The invention relates to the technical field of 
power equipment, in particular to a 
noise isolation device for 
power equipment and a using method thereof. The 
noise isolation device comprises the 
power equipment and a controller, a supporting 
noise reduction device is fixedly connected to the bottom end of the power equipment, and fixed frames are fixedly connected to the left end and the right end of the supporting 
noise reduction device; and one end of each 
fixed frame is fixedly connected with a cleaning device. According to the device, through the arrangement of the protective shell, a first motor, a rotary disc, a push rod, an air outlet 
pipe, an air outlet and an air inlet 
pipe, air is blown to the surface of a first sound insulation plate and the surface of a 
second sound insulationplate under the action of the air outlet 
pipe and the air outlet; therefore, dust on the surfaces of the first sound insulation plate and the 
second sound insulation plate is rapidly blown away through high-pressure gas, meanwhile, the air outlet pipe can swing within a certain range under the action of the first motor, it is guaranteed that no omission phenomenon occurs during cleaning, operation is easy, use by workers is facilitated, the labor intensity of the workers is reduced, and the working efficiency is improved.