Caxi yogurt can't be drunk after expiration, because expired yogurt often breeds rich pathogenic bacteria. If you drink yogurt containing pathogenic bacteria again, it will easily lead to abdominal pain, bloating and diarrhea, which will endanger your health. Many nutrients in yogurt have been decomposed and consumed, and drinking expired yogurt can not supplement nutrition and promote health. In addition, after the yogurt expires, the number of live bacteria and their activity will decrease, or even die completely. In this sense, the function of yogurt in regulating intestine has basically disappeared.