2. Cooked beef can be stored in the refrigerator if you can't finish eating it. It is recommended to seal the beef and put it in the refrigerator. Low temperature can inhibit the growth of bacteria. If beef is properly preserved, it can generally be preserved for about 3-4 days, but it is still recommended to finish eating beef as soon as possible, because the longer it is preserved, the worse the taste of beef will be and the more nutrients will be lost.