Abstract: The problems of tobacco tangling, interrupted tobacco flow,tobacco blocking,and lingering tail tobacco flow of the silo type tobacco feeder were mainly caused by the squeeze of spike roller and side arc plates, uneven tobacco spreading and lack of tail tobacco conveying device. Therefore,the feeder was improved as following:optimizing the speed ratio between the spike roller and bottom belt;modifying side arc plates; changing the type of photoelectric cell;adding a detector in the silo;increasing the inclined angle of the feeding vibratory trough's discharge slot;redesigning the deflection plate;and implementing the reversing rotation of tail tobacco spike roller. The results of application after improving showed that: the frequencies of tobacco tangling,interrupted tobacco flow and tobacco blocking decreased by 92.5%,88.9%,and 94.1%, respectively. The average time for tail tobacco discharge reduced by 18.1 minutes. Tobacco distributed evenly in the silo,and discharged smoothly. The moisture deviation in dried tobacco caused by interrupted feeding was avoided.