Abstract: Both the influence of typical artillery’s front bracket on muzzle’s vibration and the improved design of the bracket are studied.Firstly,the instant response of the structure and the vibration property curve of the muzzle under working are obtained by the finite element method.Then,the structural parameters of an artillery that have an important influence on shooting accuracy and muzzle’s vibration are clarified by parameter analysis.The analysis results show that the location of the front fulcrum and the stiffness of the front bracket have great influences on the muzzle’s vibration.In order to minimize the peak excursion of the muzzle,the thickness of the bracket plate and the location of the front fulcrum as design parameters are discussed and optimum structural size and front fulcrum’s location are obtained.The amplitude of muzzle’s vibration of the new design has greatly reduced.