Concrete pump truck is the main model of engineering machinery, the boom vibrates in the construction work. The technology principles of current software vibration reduction scheme and hardware vibration reduction scheme used in pump truck boom were analyzed. The technical principle defects of the two schemes were pointed out. For pump truck boom vibration reasons, a new kind of concrete pump truck boom vibration reduction plan,concrete current stabilizer,was put forward, and test was done in some 47 m pump truck. The results show that the vibration isolation effect is good.