The food in the refrigerator can not be exposed. Raw meat, poultry, eggs, aquatic products contain pathogens, viruses, parasites at great risk, regardless of raw and cooked will likely cause pathogens, viruses, parasites contaminated cooked food, causing edible disease. Not only that, they also need to pay attention on food must stored at a safe temperature, stored for longer periods of time not longer than 2 hours from cooking to consumption, should be stored at temperatures above 60 degrees Celsius or below 10 degrees Celsius. Pathogenic bacteria is an invisible, inaccessible microorganisms, to completely eliminate pathogenic bacteria contamination is very difficult, but can control the food storage time and temperature to prevent the propagation of pathogenic bacteria, so that it can not breed to poison the number . Generally 10 to 60 degrees Celsius suitable for bacterial growth and reproduction, called dangerous temperature, so food should be stored as far as possible to avoid the dangerous temperature