A coverage enhancement method and an apparatus are disclosed. The method includes transmitting N first SSB beams in a first SSB beam set on a first initial bandwidth part BWP resource, and transmitting M second SSB beams in a second SSB beam set on a second initial BWP resource, where coverage of the first SSB beam set is located in a first partial area of a sector, coverage of the second SSB beam set is located in a second partial area of the sector, and N and M are positive integers. In this way, complementary coverage of a first SSB beam and a second SSB beam is implemented in the sector.