Milk and milk products are healthy and nutritious, but may contain potentially harmful drug residues, residues enter the milk through contaminated feed and water, improper use of veterinary drugs, negligent milk withdrawal or incorrect collection and processing of milk. Contamination of milk by certain drug residues not only deteriorates the quality but also make the milk unfit for the consumption.it is very necessary to strictly controlled drug residues in Milk and milk products in order to protect human health.