A network access method, performed by a terminal configured with a first SIM card and a second SIM card, wherein the terminal is connected to primary access network equipment and secondary access network equipment through the first SIM card, and the terminal is connected to the secondary access network equipment with assistance of the primary access network equipment; and the method comprises: disconnecting, by the terminal, an RRC connection between the terminal and the secondary access network equipment when the terminal executes a first service through the second SIM card; determining, by the terminal, that the first service ends; and actively disconnecting, by the terminal, an RRC connection between the terminal and the primary access network equipment, and sending an RRC connection re-establishment request to the primary access network equipment, so that the terminal is reconnected to the secondary access network equipment through the first SIM card with assistance of the primary access network equipment; wherein the actively disconnecting, by the terminal, an RRC connection between the terminal and the primary access network equipment, and sending an RRC connection re-establishment request to the primary access network equipment comprises: when the terminal does not receive a measurement control message of an event B1 or an RRC connection reconfiguration request through the first SIM card within a first time period, actively disconnecting, by the terminal, the RRC connection between the terminal and the primary access network equipment, and sending the RRC connection re-establishment request to the primary access network equipment, wherein the first time period is a time period that starts when the first service ends; wherein the primary access network equipment is 4G access network equipment, and the secondary access network equipment is 5G access network equipment. disconnecting, by the terminal, an RRC connection between the terminal and the secondary access network equipment when the terminal executes a first service through the second SIM card; determining, by the terminal, that the first service ends; and actively disconnecting, by the terminal, an RRC connection between the terminal and the primary access network equipment, and sending an RRC connection re-establishment request to the primary access network equipment, so that the terminal is reconnected to the secondary access network equipment through the first SIM card with assistance of the primary access network equipment; wherein the actively disconnecting, by the terminal, an RRC connection between the terminal and the primary access network equipment, and sending an RRC connection re-establishment request to the primary access network equipment comprises: when the terminal does not receive a measurement control message of an event B1 or an RRC connection reconfiguration request through the first SIM card within a first time period, actively disconnecting, by the terminal, the RRC connection between the terminal and the primary access network equipment, and sending the RRC connection re-establishment request to the primary access network equipment, wherein the first time period is a time period that starts when the first service ends; wherein the primary access network equipment is 4G access network equipment, and the secondary access network equipment is 5G access network equipment. when the terminal does not receive a measurement control message of an event B1 or an RRC connection reconfiguration request through the first SIM card within a first time period, actively disconnecting, by the terminal, the RRC connection between the terminal and the primary access network equipment, and sending the RRC connection re-establishment request to the primary access network equipment, wherein the first time period is a time period that starts when the first service ends; wherein the primary access network equipment is 4G access network equipment, and the secondary access network equipment is 5G access network equipment.