Guide short stroke play an important role in improving the rolling stability and shape quality. The function of roughing mill guide short stroke was designed and made use， to resolve the accident of roughing rolling stopping which caused by the strip tail overstep due to serious bending sickle. After the application in production， it proves that guide short stroke can keep the strip midst obviously and provide a safeguard for finishing mills as it's advan- tage to improve the rolling stability and shape quality.