A method for transmitting data, comprising: obtaining a to-be-sent image, to-be-sent target data and coaxial data, wherein the target data is data other than the to-be-sent image and the coaxial data, and the coaxial data includes control information exchanged between a data receiving end and a data sending end, wherein obtaining to-be-sent target data comprises: obtaining to-be-sent target data indicating environmental information of an environment in which an image capture device for the to-be-sent image is located; and/or obtaining to-be-sent target data indicating audio information captured by the image capture device for the to-be-sent image; and/or obtaining to-be-sent target data indicating image information of an image; determining a first preset position as a first position for the to-be-sent image in an effective image area of an image frame, and determining a second preset position as a second position for the target data in the effective image area of the image frame, wherein the effective image area comprises an area for the to-be-sent image and an area for the target data, and the coaxial data comprises data indicating the second position; determining a third preset position as a third position for the coaxial data in a blanking area of an image frame; and taking the to-be-sent image and the target data as data of the same image frame, and sending, in a data sending mode for an effective image area, the to-be-sent image in the first position and the target data in the second position, to a receiving end, and taking the coaxial data as data of the image frame where the to-be-sent image and the target data are located, and sending the coaxial data according to the third position in a data sending mode for a blanking area to the receiving end; wherein, the data indicating the second position in the blanking area of the image frame is positioned in front of the second position, such that the data indicating the second position is received by the receiving end earlier than the target data when the receiving end obtains data in a front-to-back manner from the image frame. obtaining a to-be-sent image, to-be-sent target data and coaxial data, wherein the target data is data other than the to-be-sent image and the coaxial data, and the coaxial data includes control information exchanged between a data receiving end and a data sending end, wherein obtaining to-be-sent target data comprises: obtaining to-be-sent target data indicating environmental information of an environment in which an image capture device for the to-be-sent image is located; and/or obtaining to-be-sent target data indicating audio information captured by the image capture device for the to-be-sent image; and/or obtaining to-be-sent target data indicating image information of an image; determining a first preset position as a first position for the to-be-sent image in an effective image area of an image frame, and determining a second preset position as a second position for the target data in the effective image area of the image frame, wherein the effective image area comprises an area for the to-be-sent image and an area for the target data, and the coaxial data comprises data indicating the second position; determining a third preset position as a third position for the coaxial data in a blanking area of an image frame; and taking the to-be-sent image and the target data as data of the same image frame, and sending, in a data sending mode for an effective image area, the to-be-sent image in the first position and the target data in the second position, to a receiving end, and taking the coaxial data as data of the image frame where the to-be-sent image and the target data are located, and sending the coaxial data according to the third position in a data sending mode for a blanking area to the receiving end; wherein, the data indicating the second position in the blanking area of the image frame is positioned in front of the second position, such that the data indicating the second position is received by the receiving end earlier than the target data when the receiving end obtains data in a front-to-back manner from the image frame.