White　light-emitting　diodes　are　gradually　dominating　the　illumination　markets　that　new　design　challenges　arise　for　this　emerging　source.　Based　on　the　white　LEDs,　an　efficient　optimization　method　is　presented　for　integrated　reflective　optics.　During　the　design　process,　initial　structure　of　reflective　optics　is　numerically　calculated.　For　further　optimization,　initial　parameters　are　adjusted　by　section-modeling　method　to　determine　optimal　starting　point.　To　complete　the　design,　subsequent　spline-modeling　method　is　applied.　Design　example　show　that　the　designed　reflective　optics　for　LED　illumination　could　offer　both　high　performance　and　low　space　occupancy　rate.　Comparing　to　the　numerical　method,　the　method　offers　a　15%　uniformity　improvement　and　6-times　rise　of　processing　efficiency.　It　is　believed　that　the　effective　optimization　method　will　has　practical　applications　in　other　integrated　optics.