Because of the poor environmental hygiene conditions, small scale, and lack of epidemic prevention and protection measures for retail dairy farming, cows are susceptible to disease and milk production, and the milk is not sterilized and processed, so it is not possible to ensure that it is safe for people to drink; the milking equipment is simple (hand milking), and the processing method is backward (boiling), so it is not possible to preserve the nutrients in the milk, nor can it be guaranteed that the milk is of a hygienic quality; it may not be possible to scientifically preserve the milk in the selling process, resulting in a large and rapid multiplication of bacteria, causing serious contamination. In the selling process, it may not be able to preserve milk scientifically, which leads to a large number of bacteria, rapid reproduction, resulting in serious contamination, and drinking bulk milk is harmful. For the health of you and your family, please choose brand-name dairy products, do not buy buckets of bulk sales, or even the street milking the milk.