In this paper the experiment was carried out for the analysis of Tungsten Inert Gas welding on Aluminum alloy by using Taguchi method. The Taguchi method L9 is used to analyze the TIG welding parameters for maximizing the mechanical properties. The properties affected the welding parameters of the weld joints. TIG welding process is used to analyze the input parameter like welding current, welding voltage, gas flow rate which influence the tensile strength of Aluminum alloy of welding joints. By using Taguchi and Analysis of variance technique find the effect of individual factors which provides optimal results varying condition.