The embodiment of the invention provides an active caching method, device and system based on named data networking (NDN). The method, the device and the system are applied to a current access point (AP) accessed by a user terminal. The method comprises the steps of determining a to-be-switched target AP set of the user terminal; predicting predicted residence duration T and predicted departure time of the user terminal at the current AP in a preset time prediction mode; judging whether the user terminal currently makes a request for continuous strongly-correlated content chunks or not atthe T*pt time before predicted departure; predicting to-be- prefetched content chunk IDs in a preset prefetching content prediction mode if the user terminal currently makes a request for the continuous strongly-correlated content chunks; and generating and broadcasting a pre-caching request, wherein the pre-caching request comprises an identity of a target AP in the target AP set, the to-be- prefetched content chunk IDs and a content name. Before the user terminal carries out switching, the current AP predicts the prefetching content, and the problem that relatively many network resourcesare occupied due to the fact that the target AP carries out content prediction is avoided.