A method for acquiring system information, the method comprising: transmitting (201, 301), by a terminal, a system information request to a base station; receiving (204, 306), by the terminal, a system information request response transmitted by the base station, wherein the system information request response comprises transmission indication information of system information; wherein the transmission indication information is used to indicate that the terminal acquires, based on the transmission indication information, the system information transmitted by the base station; and acquiring, by the terminal, according to the transmission indication information, the system information transmitted by the base station; wherein the transmission indication information is used to indicate that the system information is transmitted based on a transmission parameter of the system information carried in minimum system information, or the transmission indication information is used to indicate that the system information is transmitted based on a pre-configured transmission parameter of the system information; wherein the transmission parameter comprises: an effective transmission duration and a transmission period, the acquiring, by the terminal, according to the transmission indication information, the system information transmitted by the base station comprises: after the system information request response is received, repeatedly performing, by the terminal, an action of receiving the system information according to the transmission period and stopping receiving the system information when the system information is successfully received, or the terminal stopping receiving the system information when a receiving duration reaches the effective transmission duration; wherein the receiving duration is a duration of performing the receiving action from a time instance when the system information request response is received. transmitting (201, 301), by a terminal, a system information request to a base station; receiving (204, 306), by the terminal, a system information request response transmitted by the base station, wherein the system information request response comprises transmission indication information of system information; wherein the transmission indication information is used to indicate that the terminal acquires, based on the transmission indication information, the system information transmitted by the base station; and acquiring, by the terminal, according to the transmission indication information, the system information transmitted by the base station; wherein the transmission indication information is used to indicate that the system information is transmitted based on a transmission parameter of the system information carried in minimum system information, or the transmission indication information is used to indicate that the system information is transmitted based on a pre-configured transmission parameter of the system information; wherein the transmission parameter comprises: an effective transmission duration and a transmission period, the acquiring, by the terminal, according to the transmission indication information, the system information transmitted by the base station comprises: after the system information request response is received, repeatedly performing, by the terminal, an action of receiving the system information according to the transmission period and stopping receiving the system information when the system information is successfully received, or the terminal stopping receiving the system information when a receiving duration reaches the effective transmission duration; wherein the receiving duration is a duration of performing the receiving action from a time instance when the system information request response is received. after the system information request response is received, repeatedly performing, by the terminal, an action of receiving the system information according to the transmission period and stopping receiving the system information when the system information is successfully received, or the terminal stopping receiving the system information when a receiving duration reaches the effective transmission duration; wherein the receiving duration is a duration of performing the receiving action from a time instance when the system information request response is received.