Mainly because the temperature inside the refrigerator is relatively low, there is a large amount of water vapor in the air. When the water vapor approaches the low-temperature cabinet, a layer of water droplets will condense, causing condensation. When the surrounding humidity is high and the temperature difference between inside and outside is large, condensation will be more severe. Some display refrigerators use hollow thickened tempered glass, and the upper and lower layers of glass are affected by different internal and external environments. The large spacing between the middle layers reduces the temperature difference and prevents condensation of water vapor when it encounters low temperatures. The condensation phenomenon in the refrigerator is not due to leakage or poor performance. This phenomenon is more common in southern weather and can also occur in extreme weather in the north. Simply wipe it gently with a dry cloth.