A method for establishing a Bluetooth® connection, where the method includes: establishing data connections with at least two Bluetooth® devices; obtaining a voice connection instruction, where the voice connection instruction includes identification information of a target Bluetooth® device selected by a user from the Bluetooth® devices; and establishing a voice connection between the mobile terminal and the target Bluetooth® device according to the voice connection instruction; and a mobile terminal, a Bluetooth® device, and a system. A voice connection is established with a Bluetooth® device selected by a user, so as to improve an extent to which a Bluetooth® connection is established intelligently and a capability of interacting with the user. Therefore, the user can, according to needs, freely select a Bluetooth® device with which a connection is established, thereby improving convenience of the user in using the Bluetooth® device.