The invention provides a method and a device for establishing connections. The method comprises the following steps: establishing a first connection with a router in a wired connection way; receiving connection information transmitted by the router through the first connection, wherein the connection information is used by intelligent equipment in order that the intelligent equipment is connected with the router in a wireless connection way; and establishing a second connection with the router in the wireless connection way according to the connection information. Through adoption of the method and the device, the connection information of the router can be acquired by the intelligent equipment in the wired connection way, so that leakage of the connection information of the router is avoided, and the information security is enhanced.