本論文主要目的是選用拋物面作為車燈反射罩的設計,使用蒙地卡羅光線追跡法設計出符合車燈法規標準的近光燈與遠光燈,使用拋物面反射罩,將LED發光面朝上進行反射罩配置,降低由車燈產生多餘雜散光,達到減少車燈對來車駕駛造成眩光之目的。設計出一種高光源利用率77%、低功耗的車燈照明系統設計,使用上半拋物反射罩,車燈體積更有利於汽車本身流線車形設計。;The present study mainly selects the paraboloid to be a new of design the headlight reflector. Using Monte-Carlo method to design a low beam headlight and high beam headlight which consistent to the ECE regulations.Using the characteristics of paraboloidal reflector, I put the luminous surface right side up to. Reduce the unwanted stray light of the headlight, and moreover , to reduce the influence of glare for a coming driver causing by the headlight. Also, What we design is a kind of high photosource utilization (almost as high as 77%), the low-power consumption headlight lighting system ,and since just using the top half of the parabolic reflector, the volume of the car is more conducive to the car itself and the streamline car-shaped design.