The invention discloses an intelligent cross rod pressure welding device integrating feeding, machining and discharging, which comprises a conveying mechanism, a feeding clamping mechanism, a feeding clamping mechanism, a cross rod feeding mechanism, a welding mechanism and a discharging mechanism, and the conveying mechanism, the feeding clamping mechanism and the feeding clamping mechanism are all arranged on a conveying rack; the feeding clamping mechanism is arranged on the feeding rack, the transverse rod feeding mechanism is arranged on the feeding rack, the transverse rod feeding mechanism is arranged above the feeding clamping mechanism, the welding mechanism is arranged between the feeding clamping mechanism and the discharging mechanism, and the discharging mechanism is arranged on the discharging rack. Automatic feeding of flat steel is achieved through mutual cooperation of the conveying mechanism, the feeding clamping mechanism and the supply clamping mechanism, automatic feeding of transverse rods is achieved through the transverse rod feeding mechanism, selective welding is conducted on the intersection of the flat steel and the transverse rods through the welding mechanism, finished products are automatically taken out through the discharging mechanism, and the production efficiency is improved. And automation and intelligentization are truly achieved from feeding to welding to discharging, the manual labor amount is reduced, and the production efficiency is improved.