A trunking user based message transmission method and device. The method comprises: receiving a request message from a user equipment (UE) by the wireless access device, and allocating a connection resource for the UE by the wireless access device, wherein the request message carries information indicating whether the UE is a trunking user; when the UE is a trunking user, and if the UE does not receive or send data within a preset period, triggering the UE to enter a CELL_PCH state by the wireless access device; and when the UE is not a trunking user, and if the UE does not receive or send data within a preset period, releasing the connection resource of the UE by the wireless access device.