The present invention discloses a network connection method and system. The method includes: grouping a plurality of terminals, allocating group identities, and establishing a mapping relationship between the group identities and terminal identities; establishing a group-based signaling radio bearer and a group-based data radio bearer for each group; allocating, when a terminal in each group access a network, the terminal the group-based signaling radio bearer and group-based data radio bearer corresponding to the group to which the terminal belongs according to a mapping relationship between a group identities and a terminal identity, so that the terminals initiate network access by using the group-based signaling radio bearer and the group-based data radio bearer. The signaling overhead of establishing signaling connection and data bearer may be reduced though the technical solution of the present invention.