Abstract: Cigarette case tends to fall off the case holder of the palletizing robot in an automatic palletizing system because of defects in suction means,suction plate and case quality. Therefore,the holder was improved by adopting plane cellular suction plate combined with a large vacuum source,in addition,a controller was designed to ensure the vacuum supply to the suction plate. The application results showed that the system was simple in structure and basically maintenance-free,it ran stably,the average number of cases dropping out of the robot reduced from 56 cases to 1 case per month,field noise was lowered as well.