Abstract: The co-authors brief the experience of successful modification of the Q1114 high-efficiency tube cut-off machine installed at the Seamless Steel Tube Plant,Anyang I ＆S Group Co.,Ltd. Operational practice shows that the modified machine is capable of high running efficiency,easy operation and high flexibility.The said modification is a good reference for possible modifications of similar home-made cut-off machines and the Q1118 high-efficiency cut-off machine as well.