An information transmission method, being applicable to a source base station that currently provides network service to an unmanned aerial vehicle, UAV, comprising: obtaining flight path information on the UAV; sending the flight path information to a target base station for the target base station to provide network service to the UAV according to the flight path information; wherein sending the flight path information to the target base station comprises: receiving a measurement report sent by the UAV; in response to determining to prepare for a handover with the target base station according to the measurement report, sending the flight path information on the UAV to the target base station; wherein the source base station is connected with the target base station through an X2 interface, and sending the flight path information to the target base station comprises: carrying the flight path information into a first handover request signaling; and sending the first handover request signaling to the target base station, and wherein carrying the flight path information into the first handover request signaling comprises: adding a flight path information element for carrying the flight path information in a terminal assistance signaling; carrying the flight path information into the flight path information element; adding the terminal assistance signaling to a handover preparation signaling; and carrying the handover preparation signaling into a first designated element in the first handover request signaling, wherein the first designated element is a radio resource control, RRC, context information element. obtaining flight path information on the UAV; sending the flight path information to a target base station for the target base station to provide network service to the UAV according to the flight path information; wherein sending the flight path information to the target base station comprises: receiving a measurement report sent by the UAV; in response to determining to prepare for a handover with the target base station according to the measurement report, sending the flight path information on the UAV to the target base station; wherein the source base station is connected with the target base station through an X2 interface, and sending the flight path information to the target base station comprises: carrying the flight path information into a first handover request signaling; and sending the first handover request signaling to the target base station, and wherein carrying the flight path information into the first handover request signaling comprises: adding a flight path information element for carrying the flight path information in a terminal assistance signaling; carrying the flight path information into the flight path information element; adding the terminal assistance signaling to a handover preparation signaling; and carrying the handover preparation signaling into a first designated element in the first handover request signaling, wherein the first designated element is a radio resource control, RRC, context information element. receiving a measurement report sent by the UAV; in response to determining to prepare for a handover with the target base station according to the measurement report, sending the flight path information on the UAV to the target base station; wherein the source base station is connected with the target base station through an X2 interface, and sending the flight path information to the target base station comprises: carrying the flight path information into a first handover request signaling; and sending the first handover request signaling to the target base station, and wherein carrying the flight path information into the first handover request signaling comprises: adding a flight path information element for carrying the flight path information in a terminal assistance signaling; carrying the flight path information into the flight path information element; adding the terminal assistance signaling to a handover preparation signaling; and carrying the handover preparation signaling into a first designated element in the first handover request signaling, wherein the first designated element is a radio resource control, RRC, context information element. carrying the flight path information into a first handover request signaling; and sending the first handover request signaling to the target base station, and wherein carrying the flight path information into the first handover request signaling comprises: adding a flight path information element for carrying the flight path information in a terminal assistance signaling; carrying the flight path information into the flight path information element; adding the terminal assistance signaling to a handover preparation signaling; and carrying the handover preparation signaling into a first designated element in the first handover request signaling, wherein the first designated element is a radio resource control, RRC, context information element. adding a flight path information element for carrying the flight path information in a terminal assistance signaling; carrying the flight path information into the flight path information element; adding the terminal assistance signaling to a handover preparation signaling; and carrying the handover preparation signaling into a first designated element in the first handover request signaling, wherein the first designated element is a radio resource control, RRC, context information element.