The invention discloses a short pipe-flange/sleeve/elbow full-automatic coupling and welding workstation. The short pipe-flange/sleeve/elbow full-automatic coupling and welding workstation comprises ashort pipe-flange/sleeve coupling station, a short pipe-flange/sleeve welding station and a short pipe-elbow coupling and welding station. The short pipe-flange/sleeve coupling station comprises a grabbing/welding robot, a head and tail type automatic coupling machine, carrying robots, an automatic marking machine, a flange material platform, a sleeve material platform and a short pipe material platform. The feeding operation of short pipes, flanges and sleeves, the marking operation of the flanges and the assembly and spot welding operation of the short pipes and the flanges/sleeves are achieved. The short pipe-flange/sleeve welding station comprises welding robots, rotary type position changing machines and a transfer locating platform. The feeding, welding and discharging operation ofthe short pipes to be welded is achieved. The short pipe-elbow coupling and welding station comprises a carrying robot, a pipe wrench type position changing machine, a welding robot, an elbow materialplatform and a finished product material frame. The feeding, coupling and welding operation of the short pipes and elbows and the discharging operation of welded finished products are achieved. The short pipe-flange/sleeve/elbow full-automatic coupling and welding workstation can improve the automation level of short pipe and pipe fitting coupling and welding operation.