1. Adjust the balance of the four corners at the bottom. The refrigerator should be placed in a flat and firm place on the ground. So that the four feet at the bottom of the refrigerator are on the same plane to achieve balance. Some general manufacturers have their own four-foot adjustment balance knob at the bottom of the refrigerator, which can be adjusted to the minimum noise. If there is no balance knob device, rubber pads can be added at the foot of the refrigerator to achieve balance and minimize noise. 2. To avoid * * * vibration, it is necessary to check whether the connection and reinforcement between the external pipeline and the box body are loose, resulting in * * * vibration when the compressor works. Therefore, the external pipeline must be fixed, and spring washers should be added to the bolts to prevent looseness. 3. Accessories should be installed firmly. The manufacturer in the freezer and freezer room has provided users with accessories such as ice-making boxes, layered networks and drawers, which should be installed firmly according to a certain position and slot edge. Don't put sundries on the top of the refrigerator to prevent noise caused by vibration. 4. If the noise is obviously abnormal and cannot be eliminated, it should be repaired in time.