This rotary welding positioner is mainly used for welding of circular welds. Its main function is to tilt and rotate the workpiece so that the weld is in the best position such as horizontal and ship-shaped for welding. The rotary welding positioner can fix the chuck or specific tooling on the workbench to clamp the workpiece for manual welding. The special anti-electromagnetic interference design effectively reduces the high-frequency interference during TIG welding and can effectively improve the welding quality.