The present application discloses a sidelink data indication method and a terminal equipment. The method includes: determining indication information, the indication information including at least one of a first identifier or a second identifier, wherein the first identifier is used to identify a first logical channel, the second identifier is used to identify a second logical channel, the first logical channel is used to carry original sidelink data, the second logical channel is used to carry duplicated sidelink data, the duplicated sidelink data is obtained by duplicating the original sidelink data; and sending the indication information.