Using the Zemax optical design software, a car reflector for small car headlights is designed. Aiming at the performance requirement of GB 7258—2017 Safety Technical Conditions for Motor Vehicle Operation, the optimization measures such as structural improvement are adopted for ordinary automobile reflectors to make the secondary light distribution effect more excellent, make the central spot more concentrated, and make the visual effect softer. Simulation results have shown that the effective working distance of the system is 150 m. The average light intensity of the central spot at 10 m is 4 552 lx, and the exit angle is from. 10° to +10°. The main performance indicators have reached the latest national standards, and have the potential to adapt to the future 3D printing mass production mode without increasing the industrial production cost.