Objective To determine the prescription of selegiline transdermal patches.Methods The selegiline transdermal patches were prepared and the ingredient amount of selegiline transdermal patches was determined according to the orthogonal design.Results The best prescription of selegiline transdermal patches:3%selegiline,3%Azone,15%RS100,60%PSA.Conclusion Selegiline is suitable for the transdermal therapeutic systems.Orthogonal design of prescription was suitable to study selegiline transdermal patches.