Foodsafetiology is the sum of human knowledge on food safety, It is a branch of food science that studies specially the risk of food hazards on human health and protects human health from risk of food hazards It is a new developing knowledge in the last30years. Discussing, exchanging and understanding theoretical and technical systems of foodsafetiology will be conducive to scientific research, scientific subject building and human resource training, and also to strengthening the national management and control capacity for food safety.  On the basis of papers of international organizations, academic presentations, proceedings, as well as author's scientific research, study and understanding, the paper proposed the definition of foodsafetiology, induced its theoretical and technical systems, and discussed the scientific framework of foodsafetiology.