A data transmission method for Vehicle-to-Person, V2P, communication, comprising: determining, by a first device, position information and signal strength information, wherein the position information is used for indicating a position of the first device, and the signal strength information is used for indicating strength of a second signal received by the first device; receiving, by the first device, a first signal sent by a second device according to the position information and the signal strength information; wherein receiving, by the first device, the first signal sent by the second device according to the position information comprises: determining, by the first device, whether the first device is indoors or outdoors according to the position information of the first device; receiving, by the first device, the first signal sent by the second device through starting a receiver of the first device when determining that the first terminal is outdoors; wherein receiving, by the first device, the first signal sent by the second device according to the signal strength information comprises: receiving, by the first device, the first signal sent by the second device through starting a receiver of the first device when determining that the strength of the second signal is larger than or equal to a first threshold; determining, by the first device, whether to send data according to the first signal; wherein the first device is a hand-held user terminal, and the second device is a vehicle terminal, or a Road Side Unit, RSU. determining, by a first device, position information and signal strength information, wherein the position information is used for indicating a position of the first device, and the signal strength information is used for indicating strength of a second signal received by the first device; receiving, by the first device, a first signal sent by a second device according to the position information and the signal strength information; wherein receiving, by the first device, the first signal sent by the second device according to the position information comprises: determining, by the first device, whether the first device is indoors or outdoors according to the position information of the first device; receiving, by the first device, the first signal sent by the second device through starting a receiver of the first device when determining that the first terminal is outdoors; wherein receiving, by the first device, the first signal sent by the second device according to the signal strength information comprises: receiving, by the first device, the first signal sent by the second device through starting a receiver of the first device when determining that the strength of the second signal is larger than or equal to a first threshold; determining, by the first device, whether to send data according to the first signal; determining, by the first device, whether the first device is indoors or outdoors according to the position information of the first device; receiving, by the first device, the first signal sent by the second device through starting a receiver of the first device when determining that the first terminal is outdoors; wherein receiving, by the first device, the first signal sent by the second device according to the signal strength information comprises: receiving, by the first device, the first signal sent by the second device through starting a receiver of the first device when determining that the strength of the second signal is larger than or equal to a first threshold; determining, by the first device, whether to send data according to the first signal; receiving, by the first device, the first signal sent by the second device through starting a receiver of the first device when determining that the strength of the second signal is larger than or equal to a first threshold; determining, by the first device, whether to send data according to the first signal; wherein the first device is a hand-held user terminal, and the second device is a vehicle terminal, or a Road Side Unit, RSU.