Milk products are considered one of the most important consumed foods in Jordan. Because of the spread of methods of cheating and contamination of dairy products, this can lead to food poisoning and diseases affecting human health. The distribution of questionnaires on dairy consuming households shows that the vast majority of consumers can distinguish clean milk from the non-clean, and they have the ability to distinguish milk and its products through appearance, color, taste and knowledge of the causes of corruption of yoghurt, yogurt, cheese, butter and margarine. And their high knowledge of the distinction of corrupt and polluted milk, which carry many diseases, and their knowledge of preservatives, which are considered to be the most harmful substances dairy products. The study concluded that households consuming milk and dairy products have high knowledge of milk and dairy products, in terms of distinguishing clean milk as well as its signs of corruption and causes of pollution and its role in the transmission of diseases and good health practices. The study recommended the importance of the milk source and activating the role of health control on dairy factories, And to contribute to research and studies with the concerned departments to improve the specifications of milk and milk products and the use of natural preservatives instead of adding the preservative chemicals Human health.