An information sending method includes: a sending device determining a first frequency-domain bandwidth occupied by control information to be sent, and a second frequency-domain bandwidth occupied by user data corresponding to said control information; the sending device occupying m different frequency-domain resources in a frequency-division multiplexing manner to repeatedly transmit the control information m times to a receiving device; and the sending device occupying target frequency-domain resources to send the user data to the receiving device. In the technical solution provided by the present disclosure, a sending device occupies a plurality of different frequency-domain resources and repeatedly transmits control information to a receiving device in the frequency-division multiplexing manner; thus, the probability that the control information is detected is correspondingly improved.