A method for information transmission includes that: a network device determines a first time-domain resource available on a first carrier, where the first carrier is an unlicensed carrier and the first time-domain resource is in a first downlink transmission burst; and the network device sends first information to a terminal device through the first time-domain resource on the first carrier, where the first information is used to indicate time-domain resource information of a first transmission burst according to a first subcarrier spacing.