A pilot signal transmission method, comprising: determining, by a base station, a resource location that is in a transmission time interval, TTI, and that is used to send a pilot signal, wherein the pilot signal comprises a common demodulation pilot signal and a dedicated demodulation pilot signal, and the dedicated demodulation pilot signal and the common demodulation pilot signal are located on different resource blocks of the TTI, wherein the TTI comprises a first resource block, and the first resource block comprises the common demodulation pilot signal but does not comprise the dedicated demodulation pilot signal, wherein the first resource block further comprises a synchronization pilot signal, wherein the first resource block further comprises a measurement pilot signal; and determining, by the base station, resource locations that are in the first resource block and that are used to send the common demodulation pilot signal and the synchronization pilot signal, wherein the common demodulation pilot signal and the synchronization pilot signal are located on different symbols of the first resource block, and the synchronization pilot signal is located after the common demodulation pilot signal; configuring, by the base station, frequency band bandwidth in which the common demodulation pilot signal is located in the first resource block, so that the frequency band bandwidth in which the common demodulation pilot signal is located is less than system frequency band bandwidth of the TTI; determining, by the base station, resource locations that are in the first resource block and that are used to send the common demodulation pilot signal and the measurement pilot signal, wherein the common demodulation pilot signal and the measurement pilot signal are located on different symbols of the first resource block, and the measurement pilot signal is located after the common demodulation pilot signal; sending, by the base station, the pilot signal at the resource location used to send the pilot signal. determining, by a base station, a resource location that is in a transmission time interval, TTI, and that is used to send a pilot signal, wherein the pilot signal comprises a common demodulation pilot signal and a dedicated demodulation pilot signal, and the dedicated demodulation pilot signal and the common demodulation pilot signal are located on different resource blocks of the TTI, wherein the TTI comprises a first resource block, and the first resource block comprises the common demodulation pilot signal but does not comprise the dedicated demodulation pilot signal, wherein the first resource block further comprises a synchronization pilot signal, wherein the first resource block further comprises a measurement pilot signal; and determining, by the base station, resource locations that are in the first resource block and that are used to send the common demodulation pilot signal and the synchronization pilot signal, wherein the common demodulation pilot signal and the synchronization pilot signal are located on different symbols of the first resource block, and the synchronization pilot signal is located after the common demodulation pilot signal; configuring, by the base station, frequency band bandwidth in which the common demodulation pilot signal is located in the first resource block, so that the frequency band bandwidth in which the common demodulation pilot signal is located is less than system frequency band bandwidth of the TTI; determining, by the base station, resource locations that are in the first resource block and that are used to send the common demodulation pilot signal and the measurement pilot signal, wherein the common demodulation pilot signal and the measurement pilot signal are located on different symbols of the first resource block, and the measurement pilot signal is located after the common demodulation pilot signal; sending, by the base station, the pilot signal at the resource location used to send the pilot signal.