Abstract: The cause for build-up as formed on the inner burr-removing device for HFW oil tube/casing is analyzed,the adhering-gathering formation process of the build-up is detailed,and the method as called Slope Transitional Dispersion Process to control and prevent such a trouble is described. Relevant operation practice demonstrates that the modified tube inner burr-removing device is capable of more consistently running,and the build-up occurrence rate is reduced. As a result, the frequency of checking the burr-cutter and stopping the machine for hole-opening is in turn reduced, which leads to the enhancement of both the product quality and productivity efficiency.