Communication data transmitting method and device and user equipment

The invention discloses a communication data transmitting method and device and user equipment (UE). The communication data transmitting method comprises the following steps that: the UE indicates D2D (Device to Device) data channel resources through D2D data channel resource indication information in D2D control indication information and/or index information corresponding to the D2D control indication information; and the UE transmits D2D communication data on the D2D data channel resources. Through the communication data transmitting method and device and the UE, the problem that transmitting end UE in D2D communication cannot indicate used D2D data channel resources by the way of scheduling and indicating resources by an eNB (evolved Node B) in honeycomb communication is solved, and indication of the D2D data channel resources is realized.