Terminal straight-through communication method and device

The invention discloses a terminal straight-through communication method. A search signaling sent by a sender terminal is received; the search signaling comprises a relay transmission identifier and a relay node identifier; the relay transmission identifier is used for indicating whether the search signaling is allowed to be forwarded by a relay; whether the relay transmission identifier in the search signaling indicates allowing the search signaling to be forwarded by the relay is judged; if the search signaling is allowed to be forwarded, whether the relay node identifier in the search signaling matches with the identifier parameter of the relay node allowing the search signaling to be forwarded is judged; the identifier parameter is contained in a search filter; if the relay node identifier matches with the identifier parameter, the search signaling is forwarded to a receiver terminal. The multi-hop search of a D2D (Device-to-Device) search function is realized through forwarding the search signaling by the relay; the capability of searching the receiver terminal by the sender terminal under various scenes is further enhanced; the user experience is promoted; and the personal security of the user is guaranteed. Correspondingly, the invention also discloses a terminal straight-through communication device.