Abstract: New risks require new governance. At present， with the increasingly close interweaving between digit and society， digital platforms， as the epitome of digital technology， have opened up the platformization， that is， digital platforms gradually establish the self-centered structure through technological integration and business expansion. In the process of platformization， digital platforms have gradually advanced from “indispensable” tools to “omnipotent” actors， which have mastered the unprecedented powerful energy and inevitably increased many risks. From the actor network theory， the essence of platformization is the process of constructing a heterogeneous network centered on digital platforms， and its risk source is that digital platforms obtain uncontrollable power through translation in the network. In view of the three dynamic and governance challenges of the current platformization， which are cross-departmental， vertical integration and infrastructure， it is necessary to implement multi-network governance to cope with the structural transformation brought by the platformization， and to avoid and reduce the risks brought by the platformization.

Key words: digital platform; platformization; risk governance; actor network theory