In order to further study reference and application value of the intelligent car in our daily life,TI′s MSP430G2553 single chip microcomputer minimum system is taken as the intelligent trolley′s control and detection core in this design. A design scheme of the intelligent trolley based on lowpower singlechip microcomputer is presented.To realize tracking,obstacle avoidance,voice recognition,night illumination and buzzer alarming, microcomputer constantly monitors status of the voice recognition module, infrared reflection module, motor drive module, buzzer alarm module and night detection by control program. After testing system, the car runs flexibly and smoothly, of which the hardware part works stably and possesses high reliability.