The present invention discloses a refrigerator for storing foods at a low temperature. An avatar refrigerator and a method for sensing contamination of the same receive measurement values from various sensors installed around the refrigerator in a contamination sensing mode, decide kinds and degrees of contamination in each position by analyzing the measurement values of the sensors by a control means, decide contamination solving methods, and display the kinds and degrees of contamination in each position and the contamination solving methods through a display means formed at the refrigerator door side with avatars. As a result, the avatar refrigerator and the method for sensing contamination of the same maintain the clean air environment and improve health by notifying the air contamination in the peripheral regions of the refrigerator installed at the center of the residential space and the contamination solving methods as well as freshly maintain the foods by storing the foods at a low temperature.