The present invention relates to a biaryl heterocycle substituted oxazolidinone antibacterials shown by general formula (I), a pharmaceutically acceptable salt thereof, an isomer or a prodrug thereof, wherein R1, R2, R3, R4, R5, A and B are as defined in the description. The present invention further relates to a method for preparing the compound, a pharmaceutical composition and a pharmaceutical formulation comprising the compound, and a use of the compound in the manufacture of a medicament for the treatment and/or prevention of infectious diseases and a use for the treatment and/or prevention of infectious diseases.
