Abstract:Milk is known as “white blood” due to its nutrients. It is becoming more and more important for the traceability of pathogenic bacteria, as the public’s demand for the causes of foodborne diseases increases. The traceability technology could help to understand the structure of pathogenic microorganisms and their diversity origin and evolution, that provides important scientific basis for pathogenic microorganism inspection, epidemic monitoring, prevention and control. Methods such as spectral analysis, mass spectrometry, molecular methods, and whole genome sequencing have played important roles in the traceability technology of pathogenic microorganisms in milk. This paper summarizes the principles and applications of traceability techniques commonly used to track pathogenic microorganisms in milk and milk products.