Routing information sending and receiving method and device and routing information processing system

The invention provides a routing information sending and receiving method and device and a routing information processing system. The routing information sending and receiving method comprises the step that a device-to-device (D2D) communication management solid body sends routing information used for D2D communication to user equipment (UE) in a D2D communication set. By the adoption of the routing information sending and receiving method and device and the routing information processing system, the problem that in the prior art, a solution to communication between one piece of D2D UE and another piece of E2D UE through a relay by means of routing information is not available is solved, and a solution to communication between pieces of D2D UE based on routing information is provided.