disclosed herein is a plastic compound lens for a headlight . the plastic compound lens includes a first lens part including a first light - incident surface and a first shaped surface and made of a first material , and a second lens part including an inside shaped surface and an outside convex - shaped surface and made of a second material . the second lens part extends to surround the first lens part . the first light - incident surface of the first lens part is formed as any one of plane , convex , concave , and aspherical surfaces , and an aspherical surface including an inflection point . the first shaped surface of the first lens part is formed as a surface of any one of concave , convex and aspherical lenses , and an aspherical lens including an inflection point . the inside shaped surface of the second lens part is formed to correspond to the first shaped surface of the first lens part .