Abstract: GTAW is that controls linear energy easily and has high quality welding of sheet metal.It is difficult to realize real time and effective control.Welding process is a strong nonlinear system of complexity and multi-parameter.Fuzzy control has characteristic of human experiential thought.Neural network is of self-control and self-study for information.The genetic algorithm is a new method of global optimal searching that has character of simpleness,catholicity,parallel processing and wide application.This paper designs a new fuzzy controller harmonizing using three methods' advantages.The result of simulation in pulsed GTAW indicates the new fuzzy neural controller is better than traditional fuzzy controller.