This disclosure discloses puncturing information indication methods and communication apparatuses. In an implementation, a method comprises generating a physical layer protocol data unit (PPDU) comprising a preamble, wherein the preamble comprises a universal-SIG (U-SIG) field, wherein the U-SIG field comprises mode indication information and preamble puncturing status indication information, and wherein the preamble puncturing status indication information indicates a preamble puncturing status corresponding to a mode indicated by the mode indication information, and sending the PPDU.