The invention discloses a transfer strategy realization method based on interruption performance improvement in a cellular D2D communication system. According to the method, a base station is taken as a bidirectional amplify-forward (AF) relay in the D2D system, and the base station performs normal communication with other cellular users. The concrete steps comprise that in a first time slot, a D2D user 1 sends signals to a D2D user 2 and the relay (base station) via a direct link and a relay link respectively, and the base station also receives uplink signals from the other cellular users; in a second time slot, the D2D user 2 sends signals to the D2D user 1 and the relay (base station) via the direct link and the relay link respectively, and the base station sends downlink signals to the other cellular users; and in a third time slot, the relay (base station) amplifies mixed signals received in the previous time slots and forwards the processed signals to the two D2D users. Compared with the traditional D2D communication, D2D communication provided by the invention is advantaged in that interference from the cellular users is inhibited, and the interruption performance of the system is greatly improved.