In recent years, the issues about the quality and safety of agricultural products and livestock have occurred frequently. As a source of security problems, the residues of pesticides and veterinary drug had caused serious threat on environment and human’s health. It was focused on developing a fast, simple and inexpensive method to detect the residues of pesticides and veterinary drug in recent years. Quantum dots (QDs) is made into a new fluorescent probes with excellent optical characteristics compared with the conventional organic fluorochr...