Nowadays Gas turbine inlet temperature is raised to improve overall thermal efficiency and net power output. The cooling of guide vanes is imperative to avoid their thermal damages and forced deterioration of their life span. The cooling designs influence the structural stability of such guide vanes. This research paper considered two kinds of cooling design, namely impingement cooling and showerhead cooling. The vanes are made up of Nimonic 901. The structural analyses were carried out for both cooling design blades individually. The Pro-E employed for both modeling and ANSYS R14 Finite Element Analysis. The result shows that the improved design of cooling is structurally safe and stable. The structural stability with respect to cooling design ensured for improved cooling design.