A megalopolis is not only the main body of dairy production and consumption, but also the main area where dairy safety supervision risks exist. At present, some risks exist in the production of raw materials for dairy products such as attaching more importance to safety than quality, and in the procedures of deep processing and circulation such as excessive processing, storage and hygiene issues during transportation; some problems exist in the field of dairy products safety supervision such as insufficient exertion of government functions and inadequate participation of social supervision. In order to defuse dairy products safety supervision risks and achieve effective governance of dairy production, it is needed to strengthen supervision over all processing steps of raw materials so as to provide guarantee for raw material quality construction, construct a sound and perfect quality evaluation and traceability system for deep processing and circulation, and to implement precision and standardized government supervision for supervision measures construction, and create conditions for social sharing and co-governance.