PROBLEM TO BE SOLVED: To provide a boom vibration suppression device that reduces the boom vibration in a traveling direction caused in starting and stopping, acceleration and deceleration, overcoming uneven surfaces and turning with a high damping effect by a structure capable of being manufactured simply at low cost, and can protect a boom from breakdown when an excessive external force is applied, and provide a boom sprayer with the same.SOLUTION: A boom vibration suppression device 7 is mounted on a boom sprayer 1 and suppresses the vibration of a side boom 3 in the traveling direction. The device has: a first link material 71 with one end turnably pivoted to the side boom 3; a second link material 72 with one end turnably pivoted in the other end of the first link material 71; a third link material 73 for turnably pivoting the second link material 72 and turnably pivoted to a center frame 2; and damping means 74 provided between the third link materials 73 and the center frame 2.SELECTED DRAWING: Figure
