Embodiments of the present invention provide a direct current component subcarrier configuration method and apparatus. The base station includes: a processing module, configured to: determine a first DC subcarrier on a carrier, where the first DC subcarrier is located, in a frequency domain, at a non-center frequency location on the carrier, and a center frequency of the first DC subcarrier is an integer multiple of 100 KHz; and determine a second DC subcarrier on the carrier, where the second DC subcarrier is located, in the frequency domain, at a center frequency location at which the base station transmits the carrier, and the first DC subcarrier does not overlap the second DC subcarrier.