Embodiments of this application provide a battery, an electric device, and a method and device for manufacturing battery. The battery includes: a battery cell, where a pressure relief mechanism is provided on a first wall of the battery cell; a fire-extinguishing pipeline, where the fire-extinguishing pipeline is configured to accommodate a fire-extinguishing medium, and the fire-extinguishing pipeline is configured to discharge the fire-extinguishing medium during actuation of the pressure relief mechanism; a first fastener, where the first fastener is fastened to a surface of the first wall of the battery cell away from the interior of the battery cell, and the first fastener is provided with a first limiting portion; and a second fastener, where the second fastener is provided on a side of the first fastener away from the battery cell, the second fastener is provided with a second limiting portion, and the second limiting portion cooperates with the first limiting portion to fasten the fire-extinguishing pipeline between the first fastener and the second fastener. The battery, electric device, method and device for manufacturing battery provided in this application can enhance the safety of the battery.