A method for information transmission, characterized by comprising: receiving, by a terminal device, first information from a network device through a first time-domain resource on a first carrier, wherein the first carrier is an unlicensed carrier, after successful channel detection by the network device, and wherein the first time-domain resource is in a first downlink transmission burst and the first information is used to indicate time-domain resource information of a first transmission burst according to a first subcarrier spacing, and the first transmission burst comprises the first downlink transmission burst; and determining, by the terminal device, the time-domain resource information of the first transmission burst according to the first information, wherein the time-domain resource information comprises at least one of:an end of a corresponding transmission burst; or a channel occupancy duration of a corresponding transmission burst, wherein the first information is further used to indicate time-domain resource information of a third transmission burst according to a second subcarrier spacing, wherein the third transmission burst comprises at least one of: a fourth downlink transmission burst on the first carrier; a fourth uplink transmission burst on the first carrier; a fifth downlink transmission burst on a second carrier; or, a fifth uplink transmission burst on the second carrier, and wherein a frequency-domain resource corresponding to the third transmission burst does not overlap with the frequency-domain resource corresponding to the first transmission burst. receiving, by a terminal device, first information from a network device through a first time-domain resource on a first carrier, wherein the first carrier is an unlicensed carrier, after successful channel detection by the network device, and wherein the first time-domain resource is in a first downlink transmission burst and the first information is used to indicate time-domain resource information of a first transmission burst according to a first subcarrier spacing, and the first transmission burst comprises the first downlink transmission burst; and determining, by the terminal device, the time-domain resource information of the first transmission burst according to the first information, wherein the time-domain resource information comprises at least one of:an end of a corresponding transmission burst; or a channel occupancy duration of a corresponding transmission burst, wherein the first information is further used to indicate time-domain resource information of a third transmission burst according to a second subcarrier spacing, wherein the third transmission burst comprises at least one of: a fourth downlink transmission burst on the first carrier; a fourth uplink transmission burst on the first carrier; a fifth downlink transmission burst on a second carrier; or, a fifth uplink transmission burst on the second carrier, and a fourth downlink transmission burst on the first carrier; a fourth uplink transmission burst on the first carrier; a fifth downlink transmission burst on a second carrier; or, a fifth uplink transmission burst on the second carrier, and wherein a frequency-domain resource corresponding to the third transmission burst does not overlap with the frequency-domain resource corresponding to the first transmission burst.